Convolution of Catalan numbers A000108 with A020918.
A045724
Convolution of Catalan numbers A000108 with A020918.
Terms
- a(0) =1a(1) =15a(2) =142a(3) =1083a(4) =7266a(5) =44758a(6) =259356a(7) =1435347a(8) =7663898a(9) =39761282a(10) =201483204a(11) =1001098462a(12) =4891910100a(13) =23565178380a(14) =112118316088a(15) =527674017411
External references
- oeis: A045724