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A356084
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Matula-Goebel number of the complete quaternary (4-ary) tree of n levels.
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2
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OFFSET
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1,2
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LINKS
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FORMULA
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a(n) = prime(a(n-1))^4, for n>=2.
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EXAMPLE
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For n=3, the complete quaternary tree of 3 levels is
7890481
/ / \ \ a(4) = prime(16)^4
16 16 16 16 = 7890481
// \\ // \\ // \\ // \\
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
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PROG
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(PARI) a(n) = my(ret=1); for(i=2, n, ret=prime(ret)^4); ret;
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CROSSREFS
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KEYWORD
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nonn,more
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AUTHOR
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STATUS
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approved
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