A246604 a(n) = Catalan(n) - n.

1, 0, 0, 2, 10, 37, 126, 422, 1422, 4853, 16786, 58775, 208000, 742887, 2674426, 9694830, 35357654, 129644773, 477638682, 1767263171, 6564120400, 24466266999, 91482563618, 343059613627, 1289904147300, 4861946401427, 18367353072126, 69533550915977, 263747951750332, 1002242216651339

Offset

0,4

Links

Vincenzo Librandi, Table of n, a(n) for n = 0..1000

Mathematica

Table[(CatalanNumber[n] - n), {n, 0, 20}]

Prog

(Magma) [Catalan(n)-n: n in [0..30]];

Crossrefs

Cf. A000108, A024483, A246574.

All of A000108, A001453, A246604, A273526, A120304, A289615, A289616, A289652, A289653, A289654 are very similar sequences.

Sequence in context: A191349 A073110 A034547 * A124646 A124635 A005968

Adjacent sequences: A246601 A246602 A246603 * A246605 A246606 A246607

Keyword

nonn

Author

Vincenzo Librandi, Aug 31 2014

Status

approved