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 A244705 Number of n-node unlabeled rooted trees with thinning limbs and root outdegree (branching factor) 4. 2
 1, 1, 3, 6, 15, 29, 68, 140, 312, 660, 1443, 3084, 6710, 14425, 31278, 67508, 146300, 316424, 685955, 1486008, 3223480, 6992012, 15179437, 32960891, 71617874, 155661971, 338508703, 736401503, 1602712182, 3489454243, 7600403101, 16560519877, 36097320801 (list; graph; refs; listen; history; text; internal format)
 OFFSET 5,3 COMMENTS In a rooted tree with thinning limbs the outdegree of a parent node is larger than or equal to the outdegree of any of its child nodes. LINKS Alois P. Heinz, Table of n, a(n) for n = 5..1000 MAPLE b:= proc(n, i, h, v) option remember; `if`(n=0,       `if`(v=0, 1, 0), `if`(i<1 or v<1 or n b(n-1\$2, 4\$2): seq(a(n), n=5..50); CROSSREFS Column k=4 of A244657. Sequence in context: A034464 A116696 A000220 * A319643 A092641 A077449 Adjacent sequences:  A244702 A244703 A244704 * A244706 A244707 A244708 KEYWORD nonn AUTHOR Alois P. Heinz, Jul 04 2014 STATUS approved

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Last modified December 14 14:20 EST 2019. Contains 329979 sequences. (Running on oeis4.)