Regular triangle, T(n, k) = f(n, k) - f(n, 0) + 1, where f(n, k) = Sum_{j=0..k} StirlingS2(n, n-j)*binomial(n,j) + Sum_{j=0..n-k} StirlingS2(n, n-j)*binomial(n, j), read by rows.
A176157
Regular triangle, T(n, k) = f(n, k) - f(n, 0) + 1, where f(n, k) = Sum_{j=0..k} StirlingS2(n, n-j)*binomial(n,j) + Sum_{j=0..n-k} StirlingS2(n, n-j)*binomial(n, j), read by rows.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =1a(6) =1a(7) =10a(8) =10a(9) =1a(10) =1a(11) =25a(12) =63a(13) =25a(14) =1a(15) =1a(16) =51a(17) =296a(18) =296a(19) =51a(20) =1a(21) =1a(22) =91a(23) =1060a(24) =2395a(25) =1060a(26) =91a(27) =1a(28) =1a(29) =148
External references
- oeis: A176157