a(n) = K(5,n), where K(M,n) = 2*(2*M+3)!*(4*n+2*M+1)!/((M+2)!*M!*n!*(3*n+2*M+3)!).

A362104

a(n) = K(5,n), where K(M,n) = 2*(2*M+3)!*(4*n+2*M+1)!/((M+2)!*M!*n!*(3*n+2*M+3)!).

Terms

    a(0) =132a(1) =1287a(2) =10296a(3) =78936a(4) =602316a(5) =4628052a(6) =35939904a(7) =282285432a(8) =2241753228a(9) =17986968714a(10) =145691385840

External references