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A335883
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The least k for which A335884(k) = n.
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1
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1, 3, 5, 11, 23, 47, 109, 229, 457, 1033, 2161, 4703, 10079, 20663, 43223, 94033, 208849, 420457, 872687, 1849921, 3699841, 8748001, 17496001, 36998411
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OFFSET
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0,2
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COMMENTS
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Because A335884 is fully additive and a(1) = 3, we have a(n) <= 3^n and in particular, a(n+1) <= 3*a(n), n > 0 and more generally a(n + m) <= a(n) * a(m) where m, n >= 0. (See also comments in A334099.)
a(16) = 208849 = 457^2 = a(8)*a(8) is the first composite term.
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LINKS
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FORMULA
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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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EXTENSIONS
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STATUS
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approved
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