A027130 - OEIS

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A027130

a(n) = Sum_{0<=j<=i<=n} A027113(i, n+j).

0

1, 4, 13, 40, 119, 350, 1022, 2973, 8635, 25074, 72850, 211875, 616985, 1799092, 5253127, 15358500, 44958889, 131759776, 386557548, 1135204289, 3336791503, 9816315842, 28900431835, 85147344488, 251030187583, 740539502786

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,2

LINKS

Table of n, a(n) for n=0..25.

CROSSREFS

Partial sums of A027129.

Sequence in context: A119915 A307577 A137744 * A027121 A238846 A025567

Adjacent sequences: A027127 A027128 A027129 * A027131 A027132 A027133

KEYWORD

nonn

AUTHOR

Clark Kimberling

EXTENSIONS

Title corrected by Sean A. Irvine, Oct 23 2019

STATUS

approved