A132472 Column 0 of triangle A132471.

1, 1, 2, 12, 132, 2200, 50020, 1458576, 52443832, 2262992496, 114895662336, 6760541866320, 455507310538720, 34799057492306432, 2989515666973533776, 286751042457693435936, 30519571712404528878560

Offset

0,3

Comments

Diagonal m of T=A132471 equals diagonal m-1 of matrix power T^m for m>1: T(n,k) = [T^(n-k)](n-1,k) for n>=k>0, with T(n,n)=1 and T(n+1,n)=n+1 for n>=0.

Links

Table of n, a(n) for n=0..16.

Crossrefs

Cf. A132471 (triangle); other columns: A132473, A132474.

Sequence in context: A213640 A266489 A208830 * A179420 A346186 A080487

Adjacent sequences: A132469 A132470 A132471 * A132473 A132474 A132475

Keyword

nonn

Author

Paul D. Hanna, Aug 22 2007

Status

approved