Triangle read by rows, T(n, k) = A243664(n) * binomial(n, k).

Terms

a(0) =1a(1) =1a(2) =1a(3) =21a(4) =42a(5) =21a(6) =1849a(7) =5547a(8) =5547a(9) =1849a(10) =426405a(11) =1705620a(12) =2558430a(13) =1705620a(14) =426405a(15) =203374081a(16) =1016870405a(17) =2033740810a(18) =2033740810a(19) =1016870405a(20) =203374081a(21) =173959321557a(27) =173959321557