Square array T(n, k) = Product_{j=1..n} ( Sum_{i=0..j-1} ((k+1)^5 - (k+1)^4 - (k+1)^3 + (k+1)^2)^i ) with T(n, 0) = n!, read by antidiagonals.
A156885
Square array T(n, k) = Product_{j=1..n} ( Sum_{i=0..j-1} ((k+1)^5 - (k+1)^4 - (k+1)^3 + (k+1)^2)^i ) with T(n, 0) = n!, read by antidiagonals.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =2a(6) =1a(7) =1a(8) =13a(9) =6a(10) =1a(11) =1a(12) =145a(13) =2041a(14) =24a(15) =1a(16) =1a(17) =721a(18) =3027745a(19) =3847285a(20) =120a(21) =1a(22) =1a(23) =2401a(24) =374286241a(26) =87029433985a(27) =720a(28) =1a(29) =1a(30) =6301
External references
- oeis: A156885