A027175 a(n) = A027170(2n-1, n-1).

3, 19, 76, 283, 1046, 3890, 14582, 55051, 209062, 797806, 3056868, 11752674, 45316896, 175175816, 678639146, 2634146411, 10241938406, 39882831446, 155519160716, 607181138846, 2373227900936, 9285480209456, 36364319046896

Offset

1,1

Links

Table of n, a(n) for n=1..23.

Crossrefs

Sequence in context: A174286 A336589 A240746 * A093734 A099421 A241885

Adjacent sequences: A027172 A027173 A027174 * A027176 A027177 A027178

Keyword

nonn

Author

Clark Kimberling

Status

approved