A085240 - OEIS

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A085240

As exponents in powers of 2 or 3 (A006899) occur in A085238 exactly twice, a self-inverse permutation of natural numbers is induced.

1

2, 1, 5, 7, 3, 10, 4, 12, 15, 6, 18, 8, 20, 23, 9, 25, 28, 11, 31, 13, 33, 36, 14, 38, 16, 41, 43, 17, 46, 49, 19, 51, 21, 54, 56, 22, 59, 24, 62, 64, 26, 67, 27, 69, 72, 29, 74, 77, 30, 80, 32, 82, 85, 34, 87, 35, 90, 93, 37, 95, 98, 39, 100, 40, 103, 105, 42, 108

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OFFSET

1,1

COMMENTS

A085238(n)=A085238(a(n)); a(a(n))=n.

LINKS

Table of n, a(n) for n=1..68.

Index entries for sequences that are permutations of the natural numbers

CROSSREFS

Sequence in context: A059039 A332022 A109261 * A002251 A093545 A293845

Adjacent sequences: A085237 A085238 A085239 * A085241 A085242 A085243

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Jun 22 2003

STATUS

approved