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 A211368 Array read by antidiagonals: T(m,n) = Sum(1<=i<=m) ( n + 2(i-1) )! 1
 1, 2, 7, 6, 26, 127, 24, 126, 746, 5167, 120, 744, 5166, 41066, 368047, 720, 5160, 41064, 368046, 3669866, 40284847, 5040, 41040, 368040, 3669864, 40284846, 482671466, 6267305647, 40320, 367920, 3669840, 40284840, 482671464, 6267305646 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Index numbers (compare A055089) of rows of adjacent transpositions. LINKS Tilman Piesk, Table of n, a(n) for n = 1..2016 Tilman Piesk, Arrays of permutations (Wikiversity) EXAMPLE T(3,2) = Sum( 1 <= i <= 3 ) [ ( 2 + 2(i-1) )! ] = (2+0)! + (2+2)! + (2+4)! = 2 + 24 + 720 = 746 CROSSREFS Cf. A055089. Sequence in context: A082017 A072985 A082187 * A225101 A286800 A323722 Adjacent sequences:  A211365 A211366 A211367 * A211369 A211370 A211371 KEYWORD nonn,tabl AUTHOR Tilman Piesk, Jul 07 2012 STATUS approved

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Last modified July 23 14:24 EDT 2019. Contains 325254 sequences. (Running on oeis4.)