0,2
L. Comtet, Advanced Combinatorics, Reidel, 1974, p. 171, #33.
Sequence in context: A178248 A107699 A079330 * A204554 A069736 A058192
Adjacent sequences: A059364 A059365 A059366 * A059368 A059369 A059370
nonn
N. J. A. Sloane (njas(AT)research.att.com), Jan 28 2001