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A297203
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Related to label-increasing forests with branching bounded by 4.
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7
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1, 4, 16, 68, 324, 1776, 11204, 80512, 651076, 5859204, 58117016, 630181168, 7417888504, 94216151156, 1284469275324, 18710413293092, 290033953850736, 4767191101639844, 82819769006424276, 1516403268298151208
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,2
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COMMENTS
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Sequence C_n(4) in Riordan 1978 or 1979.
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LINKS
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FORMULA
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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