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A007402
No-3-in-line problem for equilateral triangle array of side n.
(Formerly M0123)
1
1, 1, 2, 1, 2, 15, 1, 5, 7, 971, 20, 276
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,3
REFERENCES
R. H. Buchholz, personal communication.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
LINKS
Table of n, a(n) for n=1..12.
R. G. Wilson, V, Letters to N. J. A. Sloane
R. G. Wilson, V, Letter to N. J. A. Sloane, Oct. 1993
CROSSREFS
Sequence in context: A048296 A016542 A242085 * A334505 A375955 A251731
Adjacent sequences: A007399 A007400 A007401 * A007403 A007404 A007405
KEYWORD
nonn,nice
AUTHOR
N. J. A. Sloane, Mira Bernstein
STATUS
approved

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Last modified November 20 07:40 EST 2024. Contains 377940 sequences.
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