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A245102
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Number of 2n-node rooted trees of height n.
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4
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0, 1, 2, 8, 36, 180, 941, 5079, 27961, 156129, 880883, 5009625, 28668920, 164897622, 952418882, 5520254925, 32090787577, 187030223470, 1092467751427, 6393706661582, 37484034980109, 220093799592140, 1294100839792723, 7618482099893824, 44901233075819275
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OFFSET
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0,3
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LINKS
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FORMULA
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a(n) ~ c * d^n / sqrt(n), where d = 6.0313827950978605329935..., c = 0.03944957121899527... . - Vaclav Kotesovec, Jul 12 2014
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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