A091303 Third diagonal of A008970 (after A000111 and A000708).

1, 14, 118, 926, 7311, 59982, 517496, 4717222, 45484301, 463683670, 4991117034, 56630860638, 676055834971, 8475491147678, 111376106002732, 1531384454297174, 21993657178539321, 329402210042157606

Offset

1,2

Links

Table of n, a(n) for n=1..18.

Crossrefs

Sequence in context: A175874 A359184 A006223 * A241463 A284766 A341390

Adjacent sequences: A091300 A091301 A091302 * A091304 A091305 A091306

Keyword

nonn,easy

Author

N. J. A. Sloane, Feb 21 2004

Extensions

More terms from David Wasserman, Feb 28 2006

Status

approved