Triangle T(n, k) = (n-k)^n * binomial(n, n-k) for n < 2*k, k^n * binomial(n, k) for n >= 2*k with T(n, 0) = T(n, n) = 1, read by rows.
A167040
Triangle T(n, k) = (n-k)^n * binomial(n, n-k) for n < 2*k, k^n * binomial(n, k) for n >= 2*k with T(n, 0) = T(n, n) = 1, read by rows.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =1a(7) =3a(8) =3a(9) =1a(10) =1a(11) =4a(12) =96a(13) =4a(14) =1a(15) =1a(16) =5a(17) =320a(18) =320a(19) =5a(20) =1a(21) =1a(22) =6a(23) =960a(24) =14580a(25) =960a(26) =6a(27) =1a(28) =1a(29) =7
External references
- oeis: A167040