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A356121
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Matula-Goebel number of the rooted binary tree with Colijn-Plazzotta number n.
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1
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1, 4, 14, 49, 86, 301, 1849, 454, 1589, 9761, 51529, 886, 3101, 19049, 100561, 196249, 3986, 13951, 85699, 452411, 882899, 3972049, 31754, 111139, 682711, 3604079, 7033511, 31642861, 252079129, 6418, 22463, 137987, 728443, 1421587, 6395537, 50949293, 10297681
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OFFSET
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1,2
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COMMENTS
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LINKS
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FORMULA
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a(n) = prime(a(x)) * prime(a(y)) for n>=2, where subtrees x = A002024(n-1) and y = A002260(n-1).
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PROG
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(PARI) See links.
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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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