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A027115 a(n) = T(n,0) + T(n,1) + ... + T(n,2n), T given by A027113. 0
1, 4, 11, 31, 87, 246, 700, 2003, 5758, 16616, 48102, 139625, 406214, 1184138, 3457771, 10112245, 29613029, 86824136, 254840534, 748725393, 2201731878, 6479790418, 19084605389, 56247812793, 165884498711, 489512360356 (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: A192312 A004080 A298300 * A077995 A276293 A282856

Adjacent sequences:  A027112 A027113 A027114 * A027116 A027117 A027118

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified October 17 05:23 EDT 2018. Contains 316275 sequences. (Running on oeis4.)