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A211368
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Array read by antidiagonals: T(m,n) = Sum(1<=i<=m) ( n + 2(i-1) )!
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1
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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
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OFFSET
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1,2
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COMMENTS
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Index numbers (compare A055089) of rows of adjacent transpositions.
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LINKS
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EXAMPLE
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T(3,2) = Sum( 1 <= i <= 3 ) [ ( 2 + 2(i-1) )! ]
= (2+0)! + (2+2)! + (2+4)!
= 2 + 24 + 720
= 746
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CROSSREFS
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KEYWORD
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AUTHOR
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STATUS
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approved
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