Convolution of A000108 (Catalan numbers) with A038846.

A042985

Convolution of A000108 (Catalan numbers) with A038846.

Terms

    a(0) =1a(1) =17a(2) =178a(3) =1477a(4) =10654a(5) =69930a(6) =428772a(7) =2496813a(8) =13962982a(9) =75582078a(10) =398302268a(11) =2052354850a(12) =10375356460a(13) =51596749300a(14) =252953904072

External references