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A132072 Row sums of triangle A132071. 1
1, 4, 11, 22, 39, 66, 111, 190, 335, 610, 1143, 2190, 4263, 8386, 16607, 33022, 65823, 131394, 262503, 524686, 1049015, 2097634, 4194831, 8389182, 16777839, 33555106, 67109591 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..26.

Index entries for linear recurrences with constant coefficients, signature (5,-9,7,-2)

FORMULA

Binomial transform of [1, 3, 4, 0, 2, 0, 2, 0, 2,...].

G.f. 1 + x*(4-9*x+3*x^2) / ( (2*x-1)*(x-1)^3 ). a(n)=2^n +n^2+2*n-1, n>0. - R. J. Mathar, Apr 04 2012

EXAMPLE

a(3) = 22 = sum of row 3 terms of triangle A132071: (4 + 7 + 7 + 4).

a(3) = 22 = (1, 3, 3, 1) dot (1, 3, 4, 0) = (1 + 9 + 12 + 0).

CROSSREFS

Cf. A132071.

Sequence in context: A016435 A213759 A047951 * A009846 A008043 A088003

Adjacent sequences:  A132069 A132070 A132071 * A132073 A132074 A132075

KEYWORD

nonn,easy

AUTHOR

Gary W. Adamson, Aug 09 2007

STATUS

approved

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Last modified November 29 21:32 EST 2021. Contains 349416 sequences. (Running on oeis4.)