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 A248870 Satisfies Sum_{n>=0} a(n)*x^n = x / Product_{n>=0} (1 - x^n/(1 - x^n))^a(n). 1
 0, 1, 1, 3, 8, 23, 62, 181, 513, 1513, 4476, 13483, 40933, 125845, 389769, 1217590, 3828775, 12115966, 38546124, 123238296, 395725493, 1275733730, 4127339091, 13396443708, 43610621823, 142354979662, 465838195260, 1527905193504, 5022061115901, 16539625666670, 54571760414658 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,4 COMMENTS Which kind of trees is counted by this sequence (compare to A000081, A004111, A073075, A248869 and A115593)? LINKS Table of n, a(n) for n=0..30. CROSSREFS Cf. A248869. Sequence in context: A318819 A146998 A261329 * A103819 A147484 A316980 Adjacent sequences: A248867 A248868 A248869 * A248871 A248872 A248873 KEYWORD nonn AUTHOR Joerg Arndt, Mar 04 2015 STATUS approved

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Last modified October 1 22:38 EDT 2023. Contains 365828 sequences. (Running on oeis4.)