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A057334
In A000120, replace each entry k with the k-th prime and replace 0 with 1.
2
1, 2, 2, 3, 2, 3, 3, 5, 2, 3, 3, 5, 3, 5, 5, 7, 2, 3, 3, 5, 3, 5, 5, 7, 3, 5, 5, 7, 5, 7, 7, 11, 2, 3, 3, 5, 3, 5, 5, 7, 3, 5, 5, 7, 5, 7, 7, 11, 3, 5, 5, 7, 5, 7, 7, 11, 5, 7, 7, 11, 7, 11, 11, 13, 2, 3, 3, 5, 3, 5, 5, 7, 3, 5, 5, 7, 5, 7, 7, 11, 3, 5, 5, 7
OFFSET
0,2
FORMULA
a(n) = A000040(A000120(n)) for n>0.
a(n) = A008578(1 + A000120(n)). - Alois P. Heinz, Nov 03 2024
PROG
(PARI) a(n) = if (n==0, 1, prime(hammingweight(n))); \\ Michel Marcus, Feb 08 2014
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Alford Arnold, Aug 27 2000
EXTENSIONS
More terms from Michel Marcus, Feb 08 2014
STATUS
approved