Cube of the lower triangular normalized 2nd kind Stirling matrix.

Terms

a(0) =1a(1) =7a(2) =1a(3) =379a(4) =117a(5) =4a(6) =8887a(7) =4297a(8) =312a(9) =4a(10) =3634247a(11) =2411993a(12) =273657a(13) =7418a(14) =45a(15) =512080090549a(16) =435104283499a(17) =67806664899a(18) =2877230158a(19) =36766575a(20) =121680