A027312 a(n) = Sum_{k=0..n+2} (k+1) * A026323(n, k).

1, 6, 27, 101, 357, 1215, 4043, 13239, 42849, 137446, 437775, 1386369, 4369661, 13717842, 42918903, 133887207, 416601657, 1293386940, 4007492727, 12395015289, 38276340453, 118029405441, 363483388935, 1118056644207, 3435356994857, 10545018480000, 32338826982603

Offset

0,2

Links

Table of n, a(n) for n=0..26.

Crossrefs

Sequence in context: A009061 A012320 A097553 * A057222 A124641 A169793

Adjacent sequences: A027309 A027310 A027311 * A027313 A027314 A027315

Keyword

nonn

Author

Clark Kimberling

Extensions

Title corrected and more terms from Sean A. Irvine, Oct 27 2019

Status

approved