Convolution of the (signless) central Stirling numbers of the first kind (A187646) and the central Stirling numbers of the second kind (A007820).

A187659

Convolution of the (signless) central Stirling numbers of the first kind (A187646) and the central Stirling numbers of the second kind (A007820).

Terms

    a(0) =1a(1) =2a(2) =19a(3) =333a(4) =8862a(5) =322885a(6) =15061381a(7) =858280605a(8) =57766424400

External references