A008285 Erroneous version of A342587.
1, 1, 2, 1, 12, 6, 1, 86, 108, 24, 1, 840, 2310, 960, 120, 1, 11642, 65700, 42960, 9000, 720, 1, 227892, 2583126, 2510760, 712320, 90720, 5040, 1, 6285806, 142259628, 199424904, 71243760, 11481120, 987840, 40320
Offset: 1
Keywords
Examples
Triangle T(n,k) (with n >= 1 and 1 <= k <= n) begins as follows: 1; 1, 2; 1, 12, 6; 1, 86, 108, 24; 1, 840, 2310, 960, 120; 1, 11642, 65700, 42960, 9000, 720; 1, 227892, 2583126, 2510760, 712320, 90720, 5040; ...
Links
- L. Comtet, Advanced Combinatorics, Reidel, 1974, p. 60.