A013621 Triangle of coefficients in expansion of (2+5x)^n.

1, 2, 5, 4, 20, 25, 8, 60, 150, 125, 16, 160, 600, 1000, 625, 32, 400, 2000, 5000, 6250, 3125, 64, 960, 6000, 20000, 37500, 37500, 15625, 128, 2240, 16800, 70000, 175000, 262500, 218750, 78125, 256, 5120, 44800, 224000, 700000, 1400000

Offset

0,2

Links

Table of n, a(n) for n=0..41.

Formula

G.f.: 1 / [1 - x(2+5y)].

Crossrefs

Sequence in context: A065160 A255544 A019152 * A107732 A349475 A111364

Adjacent sequences: A013618 A013619 A013620 * A013622 A013623 A013624

Keyword

tabl,nonn,easy

Author

N. J. A. Sloane.

Status

approved