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Revision History forA073093

(Bold, blue-underlined text is anaddition; faded, red-underlined text is adeletion.)

Showing entries 1-10 |older changes
A073093 Number of prime power divisors of n.
(history; published version)
#62byCharles R Greathouse IVat Thu Sep 08 08:45:06 EDT 2022
PROG

(MAGMAMagma) [n eq 1 select 1 else &+[p[2]: p in Factorization(n)]+1: n in [1..100]]; //Vincenzo Librandi,Jan 06 2017

Discussion
Thu Sep 08 08:45
OEIS Server:https://oeis.org/edit/global/2944
#61byJon E. Schoenfieldat Sun Dec 17 22:32:02 EST 2017
STATUS

proposed

approved

#60byJon E. Schoenfieldat Sun Dec 17 18:26:53 EST 2017
STATUS

editing

proposed

#59byJon E. Schoenfieldat Sun Dec 17 18:26:51 EST 2017
PROG

(Mupad) numlib::Omega (2*n)$ n=1..105 //Zerinvary Lajos,May 13 2008

(MuPAD) numlib::Omega (2*n)$ n=1..105 //Zerinvary Lajos,May 13 2008

STATUS

approved

editing

#58byR. J. Matharat Sun May 28 07:57:28 EDT 2017
STATUS

editing

approved

#57byR. J. Matharat Sun May 28 07:57:21 EDT 2017
COMMENTS

a(n) depends only on the prime signature of n with a(A046523A025487(n)) = 1, 2, 3, 3, 4, 4, 5, 5, 4, 6, 5, 6, 5, 7, 6, 7,..=A036041(n)+1;(n>=1). -R. J. Mathar,May 28 2017

#56byR. J. Matharat Sun May 28 07:53:56 EDT 2017
COMMENTS

a(n) depends only on the prime signature of n with a(A046523(n)) = 1, 2, 3, 3, 4, 4, 5, 5, 4, 6, 5, 6, 5, 7, 6, 7,.. (n>=1). -R. J. Mathar,May 28 2017

STATUS

approved

editing

#55byR. J. Matharat Sat May 27 13:00:55 EDT 2017
STATUS

editing

approved

#54byR. J. Matharat Sat May 27 12:59:33 EDT 2017
FORMULA

a(n) = big Omega (n)+1 =A001222(n)+1 =A001222(2*n).

a(n) =A001222(n) + 1. -Robert Israel,Sep 06 2015

CROSSREFS

a(n) = big Omega (n)+1 = big Omega (2n), cf.A001222.

STATUS

approved

editing

#53byN. J. A. Sloaneat Fri Jan 06 08:39:47 EST 2017
STATUS

proposed

approved

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Last modified September 19 16:34 EDT 2024. Contains 376014 sequences. (Running on oeis4.)