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

1,3

Links

Table of n, a(n) for n=1..36.

L. Comtet, Advanced Combinatorics, Reidel, 1974, p. 60.

Example

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;
  ...

Crossrefs

Cf. A000142 (diagonal), A001035 (row sums), A055531 (k=2), A055532 (k=3), A055533 (subdiagonal), A081064, A342501 (connected).

Sequence in context: A276998 A222866 A342587 * A119274 A066991 A132875

Adjacent sequences: A008282 A008283 A008284 * A008286 A008287 A008288

Keyword

dead

Author

N. J. A. Sloane

Status

approved