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A086962 a(A086957(n))=A086957(n), a(A086958(n))=A086959(n), a(A086959(n))=A086958(n), see A086956. 9
1, 3, 2, 4, 5, 8, 7, 6, 9, 25, 11, 15, 13, 21, 12, 16, 17, 18, 19, 24, 14, 33, 23, 20, 10, 39, 27, 28, 29, 36, 31, 32, 22, 51, 35, 30, 37, 57, 26, 48, 41, 56, 43, 44, 54, 69, 47, 40, 49, 50, 34, 52, 53, 45, 55, 42, 38, 87, 59, 70, 61, 93, 63, 64, 65, 88, 67, 68, 46 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

A self-inverse permutation of natural numbers: a(a(n))=n;

a(n) = A086962(A086963(n)) = A086963(A086962(n)).

LINKS

Table of n, a(n) for n=1..69.

Index entries for sequences that are permutations of the natural numbers

CROSSREFS

Cf. A086572, A086571.

Sequence in context: A125060 A039882 A164287 * A001612 A275901 A305369

Adjacent sequences:  A086959 A086960 A086961 * A086963 A086964 A086965

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Jul 25 2003

STATUS

approved

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Last modified January 16 15:53 EST 2019. Contains 319195 sequences. (Running on oeis4.)