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A263163
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Number of lattice paths starting at {n}^5 and ending when any component equals 0, using steps that decrement one or more components by one.
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2
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1, 31, 32461, 142090291, 944362553521, 7622403922836151, 68836844233002312181, 668865316589763487491811, 6842570537592835194176298241, 72725938463068824904583496062671, 796079042828286992045143086504942301, 8920612967950147759634381671622287341331
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OFFSET
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0,2
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LINKS
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MAPLE
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g():= seq(convert(n, base, 2)[1..5], n=33..63):
b:= proc(l) option remember;
`if`(l[1]=0, 1, add(b(sort(l-h)), h=g()))
end:
a:= n-> b([n$5]):
seq(a(n), n=0..12);
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MATHEMATICA
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g[] = Table[Reverse[IntegerDigits[n, 2]][[;; 5]], {n, 2^5 + 1, 2^6 - 1}];
b[l_] := b[l] = If[l[[1]] == 0, 1, Sum[b[Sort[l - h]], {h, g[]}]];
a[n_] := b[Table[n, {5}]];
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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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