0,2

W. C. Shiu, Wiener numbers ..., Graph Theory Notes of New York 32 (1997), 10-15.

(1/10)*n*(n+1)*(4*n^3+36*n^2+79*n+16)

Sequence in context: A126495 A000499 A042416 this_sequence A125111 A016767 A059827

Adjacent sequences: A033541 A033542 A033543 this_sequence A033545 A033546 A033547

nonn

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