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A139145 a(1) = 1, a(2*n) = a(n)^2, a(2*n+1) = a(n)*(a(n)+1). 1
1, 1, 2, 1, 2, 4, 6, 1, 2, 4, 6, 16, 20, 36, 42, 1, 2, 4, 6, 16, 20, 36, 42, 256, 272, 400, 420, 1296, 1332, 1764, 1806, 1, 2, 4, 6, 16, 20, 36, 42, 256, 272, 400, 420, 1296, 1332, 1764, 1806, 65536, 65792, 73984, 74256, 160000, 160400, 176400, 176820, 1679616 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,3
COMMENTS
a(2^n - 1) = A007018(n-1).
LINKS
CROSSREFS
Sequence in context: A214783 A360279 A284001 * A201635 A179787 A358918
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Apr 10 2008
STATUS
approved

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Last modified March 19 04:58 EDT 2024. Contains 370952 sequences. (Running on oeis4.)