1,6

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

Dan Hoey, Bill Gosper and Rich Schroeppel, Discussions in Math-Fun Mailing list, circa Jul 13 1999.

W. F. Lunnon, Counting multidimensional polyominoes. Computer Journal 18 (1975), no. 4, pp. 366-367.

R. C. Schroeppel, A few mathematical experiments

A row of A049429.

Sequence in context: A001526 A106304 A006676 this_sequence A055969 A112822 A033589

Adjacent sequences: A006765 A006766 A006767 this_sequence A006769 A006770 A006771

nonn

N. J. A. Sloane (njas(AT)research.att.com).