Array read by descending antidiagonals: A(n, k) = (n + 1)! * H(k, n + 1), where H(n, k) is a higher-order harmonic number, H(0, k) = 1/k and H(n, k) = Sum_{j=1..k} H(n-1, j), for 0 <= k <= n.
A105954
Array read by descending antidiagonals: A(n, k) = (n + 1)! * H(k, n + 1), where H(n, k) is a higher-order harmonic number, H(0, k) = 1/k and H(n, k) = Sum_{j=1..k} H(n-1, j), for 0 <= k <= n.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =2a(6) =1a(7) =5a(8) =11a(9) =6a(10) =1a(11) =7a(12) =26a(13) =50a(14) =24a(15) =1a(16) =9a(17) =47a(18) =154a(19) =274a(20) =120a(21) =1a(22) =11a(23) =74a(24) =342a(25) =1044a(26) =1764a(27) =720a(28) =1a(29) =13
External references
- oeis: A105954