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A143084 Triangle read by rows: T(n,m) = (n + m)!. 2
1, 1, 2, 2, 6, 24, 6, 24, 120, 720, 24, 120, 720, 5040, 40320, 120, 720, 5040, 40320, 362880, 3628800, 720, 5040, 40320, 362880, 3628800, 39916800, 479001600, 5040, 40320, 362880, 3628800, 39916800, 479001600, 6227020800, 87178291200 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
0,3
COMMENTS
Row sums are: 1, 3, 32, 870, 46224, 4037880, 522956160, 93928267440, 22324392518400, 6780385526302080, 2561327494111411200, ...
LINKS
FORMULA
T(n,m) = (n + m)!.
EXAMPLE
Triangle begins:
{1},
{1, 2},
{2, 6, 24},
{6, 24, 120, 720},
{24, 120, 720, 5040, 40320},
{120, 720, 5040, 40320, 362880, 3628800},
{720, 5040, 40320, 362880, 3628800, 39916800, 479001600},
{5040, 40320, 362880, 3628800, 39916800, 479001600, 6227020800, 87178291200},
...
MATHEMATICA
t[n_, m_] := (n + m)!; Table[Table[t[n, m], {m, 0, n}], {n, 0, 10}]; Flatten[%]
CROSSREFS
Cf. A000142.
Sequence in context: A188958 A141902 A069466 * A188962 A076741 A320603
KEYWORD
nonn,easy,tabl
AUTHOR
EXTENSIONS
Offset changed to 0 by Jinyuan Wang, Dec 19 2020
STATUS
approved

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Last modified March 28 12:59 EDT 2024. Contains 371254 sequences. (Running on oeis4.)