A127120 Column limit of A127119.

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

Offset: 0

Author

Franklin T. Adams-Watters, Jan 05 2007

Keywords

• nonn

Comments

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.

Crossrefs

Cf. A001372, A127119, A127122.

Programs

PARI

\\ Needs F from A127119.
seq(n)={my(m=2*n-1); Vecrev(F(m)[m,n..m])} \\ Andrew Howroyd, Feb 21 2020

Extensions

Terms a(5) and beyond from Andrew Howroyd, Feb 21 2020