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Search: id:A103719
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| A103719 |
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Column m=2 sequence of triangle A103718(n,m), n>=0, (without leading zeros). |
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+0
2
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| 1, 7, 45, 310, 2359, 19901, 185408, 1896380, 21163076, 256176052, 3345574440, 46910470152, 703146058224, 11222813318544, 190069993713024, 3404916420352128, 64333503601542144, 1278725806081645056
(list; graph; listen)
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OFFSET
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0,2
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FORMULA
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a(n)= |S1(n+3, 3)| + |S1(n+3, 4)|= |S1(n+4, 4)|-(n+2)*|S1(n+3, 4)|, with S1(n, m):= A048994(n, m), n>=>m=0 (Stirling1 triangle).
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CROSSREFS
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Sequence in context: A099842 A115194 A062274 this_sequence A134437 A018927 A001266
Adjacent sequences: A103716 A103717 A103718 this_sequence A103720 A103721 A103722
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KEYWORD
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nonn,easy
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AUTHOR
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Wolfdieter Lang (wolfdieter.lang_AT_physik_DOT_uni-karlsruhe_DOT_de), Feb 24 2005
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