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A308328
Inverse permutation to A308317.
2
1, 2, 4, 3, 8, 16, 32, 6, 9, 64, 128, 12, 256, 512, 1024, 5, 2048, 18, 4096, 24, 8192, 16384, 32768, 48, 27, 65536, 36, 96, 131072, 262144, 524288, 10, 1048576, 2097152, 4194304, 81, 8388608, 16777216, 33554432, 192, 67108864, 134217728, 268435456, 384, 72
OFFSET
1,2
FORMULA
a(A005117(e+1)) = 2^e for any e >= 0.
a(A001146(k-1)) = prime(k) for any k > 0.
EXAMPLE
A308317(96) = 28, hence a(28) = 96.
PROG
(PARI) See Links section.
CROSSREFS
KEYWORD
nonn
AUTHOR
Rémy Sigrist, May 20 2019
STATUS
approved