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1, 3, 12, 41, 140, 457, 1485, 4732, 14986, 47025, 146784, 455683, 1409122, 4341456, 13336440, 40858875, 124894889, 380993722, 1160145321, 3527008680, 10707133507, 32461710583, 98300107420, 297348593017, 898559807247, 2712889137261, 8183743165156, 24668014337837
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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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Number of endofunctions on a set with m+n elements, where the maximum indegree is m, when m > n. Increasing m just adds additional points with empty preimage that map to the unique element with indegree m.
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LINKS
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Table of n, a(n) for n=0..27.
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PROG
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(PARI) \\ Needs F from A127119.
seq(n)={my(m=2*n-1); Vecrev(F(m)[m, n..m])} \\ Andrew Howroyd, Feb 21 2020
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CROSSREFS
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Cf. A001372, A127119, A127122.
Sequence in context: A263102 A038345 A336337 * A325482 A017940 A038342
Adjacent sequences: A127117 A127118 A127119 * A127121 A127122 A127123
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KEYWORD
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nonn
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AUTHOR
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Franklin T. Adams-Watters, Jan 05 2007
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EXTENSIONS
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Terms a(5) and beyond from Andrew Howroyd, Feb 21 2020
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STATUS
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approved
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