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URL: https://oeis.org/A245103

⇱ A245103 - OEIS

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A245103
Number of (2n+1)-node rooted trees of height n.
3
1, 1, 4, 18, 93, 498, 2744, 15349, 86802, 494769, 2837412, 16351036, 94599339, 549118128, 3196397701, 18651028188, 109057492901, 638863803720, 3748605725140, 22027421351633, 129606128716906, 763484925360476, 4502370205339221, 26577052185126059
OFFSET
0,3
LINKS
FORMULA
a(n) = A034781(2n+1,n).
a(n) ~ c * d^n / sqrt(n), where d = 6.0313827950978605329935... (same as for A245102 and A339440), c = 0.14566140512597547487... . - Vaclav Kotesovec, Jul 12 2014
CROSSREFS
Cf. A034781.
Sequence in context: A020064 A306153 A123589 * A393077 A200717 A346763
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Jul 11 2014
STATUS
approved