1,2

R. M. Foster, Geometrical circuits of electrical networks, Transactions of the American Institute of Electrical Engineers, 51 (1932), 309-317.

N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

Cf.A002632.

Sequence in context:A359986A006116A122082*A107948A220840A058673

Adjacent sequences:A002628A002629A002630*A002632A002633A002634

nonn,more,nice

approved