A027115 a(n) = T(n,0) + T(n,1) + ... + T(n,2n), T given by A027113.

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

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