A134418 Row sums of triangle A134417.

1, 5, 14, 48, 152, 496, 1600, 5184, 16768, 54272, 175616, 568320, 1839104, 5951488

Offset

1,2

Links

Table of n, a(n) for n=1..14.

Index entries for linear recurrences with constant coefficients, signature (2, 4).

Formula

Row sums of triangle A134417. Binomial transform of A133632. Inverse binomial transform of A048875.

Inverse binomial transform of A048875: (l, 6, 25, 106, 449, ...). - Gary W. Adamson, Nov 23 2007

G.f.: (1+3*x)/(1-2*x-4*x^2). - Vladimir Kruchinin, May 06 2011

Example

a(4) = 48 = sum of row 4 terms of triangle A134417: (1 + 12 + 15 + 20).
a(4) = 48 = (1, 3, 3, 1) dot (1, 4, 5, 20), given A133632 = (1, 4, 5, 20, 25, 100, ...).
a(3) = 14 = (1, -2, 1) dot (1, 6, 25), = (1, -12, 25), where A048875 = (1, 6, 25, 106, 449, 1902, ...).

Crossrefs

Cf. A133632, A134417, A048875.

Cf. A048875.

Sequence in context: A152051 A220563 A075827 * A272147 A272223 A107242

Adjacent sequences: A134415 A134416 A134417 * A134419 A134420 A134421

Keyword

nonn

Author

Gary W. Adamson, Oct 24 2007

Status

approved