A165193 Eigensequence of triangle A038208.

1, 4, 28, 352, 7888, 319168, 23833792, 3359617024, 911281182976

Offset: 1

Author

Gary W. Adamson, Sep 06 2009

Keywords

• nonn
• more

Crossrefs

Cf. A038208.

Formula

Given triangle A038208 as an infinite lower triangular matrix: [1; 2,2; 4,8,4; 8,24,24,8;...], shift the triangle down one row, inserting "1" at (0,0) = triangle Q. Then lim:_{n->oo} Q^n generates a one-column vector [1, 1, 4, 28, 352,...] such that A038208 * the vector = [1, 4, 28,...].