Triangle read by rows, T(n, k) = Sum_{j=0..n} C(n-j, n-k)*E2(n, j), where E2 are the second-order Eulerian numbers A201637, for n >= 0 and 0 <= k <= n.
A112493
Triangle read by rows, T(n, k) = Sum_{j=0..n} C(n-j, n-k)*E2(n, j), where E2 are the second-order Eulerian numbers A201637, for n >= 0 and 0 <= k <= n.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =4a(5) =3a(6) =1a(7) =11a(8) =25a(9) =15a(10) =1a(11) =26a(12) =130a(13) =210a(14) =105a(15) =1a(16) =57a(17) =546a(18) =1750a(19) =2205a(20) =945a(21) =1a(22) =120a(23) =2037a(24) =11368a(25) =26775a(26) =27720a(27) =10395a(28) =1a(29) =247
External references
- oeis: A112493