T(n,k) = 1/k! * Sum_{i=0..k} (-1)^(k-i) *C(k,i) * A258219(n,i); triangle T(n,k), n>=0, 0<=k<=n, read by rows.
A258220
T(n,k) = 1/k! * Sum_{i=0..k} (-1)^(k-i) *C(k,i) * A258219(n,i); triangle T(n,k), n>=0, 0<=k<=n, read by rows.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =4a(4) =6a(5) =1a(6) =25a(7) =49a(8) =15a(9) =1a(10) =208a(11) =498a(12) =217a(13) =28a(14) =1a(15) =2146a(16) =6016a(17) =3360a(18) =635a(19) =45a(20) =1a(21) =26368a(22) =84042a(23) =56728a(24) =13997a(25) =1475a(26) =66a(27) =1a(28) =375733a(29) =1332661
External references
- oeis: A258220