Triangle, read by rows, defined by T(n, k) = b(n, k) + b(n, n-k+1) - (b(n,1) + b(n,n)) + 1, where b(n, k) = (-1)^n*(n!/k!)^2 *binomial(n-1, k-1).
A169658
Triangle, read by rows, defined by T(n, k) = b(n, k) + b(n, n-k+1) - (b(n,1) + b(n,n)) + 1, where b(n, k) = (-1)^n*(n!/k!)^2 *binomial(n-1, k-1).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =1a(7) =-96a(8) =-96a(9) =1a(10) =1a(11) =-98a(12) =9602a(13) =-98a(14) =1a(15) =1a(16) =129780a(17) =-365400a(18) =-365400a(19) =129780a(20) =1a(21) =1a(22) =-12701092a(23) =14791142a(24) =23637602a(25) =14791142a(26) =-12701092a(27) =1a(28) =1a(29) =1219277248
External references
- oeis: A169658