Square array T(n, k) = Product_{j=1..n} ( Sum_{i=0..j-1} ( (k+1)^6 -(k+1)^5 -(k+1)^4 +(k+1)^2 )^i ) with T(n, 0) = n!, read by antidiagonals.
A156889
Square array T(n, k) = Product_{j=1..n} ( Sum_{i=0..j-1} ( (k+1)^6 -(k+1)^5 -(k+1)^4 +(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) =21a(9) =6a(10) =1a(11) =1a(12) =415a(13) =8841a(14) =24a(15) =1a(16) =1a(17) =2833a(18) =71301565a(19) =74450061a(20) =120a(21) =1a(22) =1a(23) =11901a(24) =22729320481a(27) =720a(28) =1a(29) =1a(30) =37621a(35) =5040
External references
- oeis: A156889