0,4
Russell, Merris; William Watkins, Tensors and graphs, SIAM J. Algebraic Discrete Methods 4 (1983), no. 4, 534-547.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
Table of n, a(n) for n=0..6.
Sequence in context: A152799 A140824 A001433 * A067771 A182561 A056382
Adjacent sequences: A005365 A005366 A005367 * A005369 A005370 A005371
nonn
N. J. A. Sloane.
approved
