A027129 - OEIS

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A027129

a(n) = T(n,n) + T(n,n+1) + ... + T(n,2n), T given by A027113.

1, 3, 9, 27, 79, 231, 672, 1951, 5662, 16439, 47776, 139025, 405110, 1182107, 3454035, 10105373, 29600389, 86800887, 254797772, 748646741, 2201587214, 6479524339, 19084115993, 56246912653, 165882843095, 489509315203

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

OFFSET

0,2

LINKS

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

CROSSREFS

Sequence in context: A238440 A269578 A026289 * A077844 A077827 A299108

Adjacent sequences: A027126 A027127 A027128 * A027130 A027131 A027132

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved