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A052789
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A simple grammar.
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1
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0, 1, 10, 225, 8000, 390625, 24300000, 1838265625, 163840000000, 16815125390625, 1953125000000000, 253295162119140625, 36279705600000000000, 5688009063105712890625, 968890104070000000000000
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,3
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LINKS
| INRIA Algorithms Project, Encyclopedia of Combinatorial Structures 746
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FORMULA
| E.g.f.: -1/5*LambertW(-5*x)
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MAPLE
| spec := [S, {B=Set(S), S=Prod(Z, B, B, B, B, B)}, labeled]: seq(combstruct[count](spec, size=n), n=0..20);
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CROSSREFS
| Sequence in context: A166181 A199748 A064333 * A092254 A004702 A027952
Adjacent sequences: A052786 A052787 A052788 * A052790 A052791 A052792
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KEYWORD
| easy,nonn
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AUTHOR
| encyclopedia(AT)pommard.inria.fr, Jan 25 2000
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