A sequence related to A000108 (Catalan numbers).

A115194

A sequence related to A000108 (Catalan numbers).

Terms

    a(0) =1a(1) =7a(2) =45a(3) =291a(4) =1917a(5) =12867a(6) =87805a(7) =607747a(8) =4257789a(9) =30140419a(10) =215277565a(11) =1549615107a(12) =11230642173a(13) =81882660867a(14) =600196448253

External references