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Search: id:A124014
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| A124014 |
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a(n) = the sum of the terms in the n-th antidiagonal of A124975. |
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+0
1
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| 1, 2, 4, 8, 22, 138, 4952, 7139100, 21413761011002, 226852422426283857888381406, 25729877378683265674254171054115441638555802828935420, 33101329464903992847043509548078935949553706729670957423891396435242115248918112\ 6832086450397574900411936
(list; graph; listen)
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OFFSET
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1,2
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LINKS
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Leroy Quet, Home Page (listed in lieu of email address)
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MATHEMATICA
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t[m_, n_] := t[m, n] = If[m == 1 || n == 1, 1, Product[t[k, n], {k, m - 1}] + Product[t[m, j], {j, n - 1}]]; Plus @@@ Table[t[d + 1 - j, j], {d, 12}, {j, d}] (*Chandler*)
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CROSSREFS
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Cf. A124975.
Sequence in context: A158324 A002075 A122623 this_sequence A100827 A034906 A018323
Adjacent sequences: A124011 A124012 A124013 this_sequence A124015 A124016 A124017
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KEYWORD
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easy,nonn
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AUTHOR
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Leroy Quet Nov 23 2006
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EXTENSIONS
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Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Dec 11 2006
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