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1, 1, 2, 7, 34, 198, 1308, 9651, 79210, 720898, 7240804, 79774814, 957795188, 12453298700, 174353907960, 2615339041155, 41845544418330, 711374726547210, 12804746933817300, 243290199050400810, 4865804009789159580, 102181884318952612980, 2248001455463732796360
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,3
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LINKS
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MATHEMATICA
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a[n_] := Sum[A174159[n, k], {k, 0, n}]; Table[a[n], {n, 0, 22}]
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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