Irregular triangle read by rows: T(n,k) = Sum_{i=0..k} (-1)^i * binomial(4*n+1,i) * binomial(k+4-i,4)^n, 0 <= k <= 4*(n-1).
A236463
Irregular triangle read by rows: T(n,k) = Sum_{i=0..k} (-1)^i * binomial(4*n+1,i) * binomial(k+4-i,4)^n, 0 <= k <= 4*(n-1).
Terms
- a(0) =1a(1) =1a(2) =16a(3) =36a(4) =16a(5) =1a(6) =1a(7) =112a(8) =1828a(9) =8464a(10) =13840a(11) =8464a(12) =1828a(13) =112a(14) =1a(15) =1a(16) =608a(17) =40136a(18) =724320a(19) =4961755a(20) =15018688a(21) =21571984a(22) =15018688a(23) =4961755a(24) =724320a(25) =40136a(26) =608a(27) =1a(28) =1a(29) =3104
External references
- oeis: A236463