A013628 Triangle of coefficients in expansion of (4+5x)^n.

1, 4, 5, 16, 40, 25, 64, 240, 300, 125, 256, 1280, 2400, 2000, 625, 1024, 6400, 16000, 20000, 12500, 3125, 4096, 30720, 96000, 160000, 150000, 75000, 15625, 16384, 143360, 537600, 1120000, 1400000, 1050000, 437500, 78125, 65536

Offset

0,2

Links

Table of n, a(n) for n=0..36.

Formula

G.f.: 1 / [1 - x(4+5y)].

Crossrefs

Sequence in context: A284869 A057729 A110278 * A127007 A007837 A032219

Adjacent sequences: A013625 A013626 A013627 * A013629 A013630 A013631

Keyword

tabl,nonn,easy

Author

N. J. A. Sloane.

Status

approved