A024506 a(n) = [ C(2n,n)/2^(n+3) ].

0, 0, 0, 0, 0, 0, 1, 3, 6, 11, 22, 43, 82, 158, 306, 591, 1146, 2225, 4327, 8426, 16432, 32082, 62707, 122687, 240263, 470916, 923720, 1813228, 3561699, 7000581, 13767809

Offset

0,8

Links

Table of n, a(n) for n=0..30.

Crossrefs

Sequence in context: A103322 A284474 A117075 * A068033 A293337 A293364

Adjacent sequences: A024503 A024504 A024505 * A024507 A024508 A024509

Keyword

nonn

Author

Clark Kimberling

Status

approved