
1, 12, 2, 8, 9, 3, 13, 4, 14, 5, 10, 7, 6, 11, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72
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OFFSET

1,2


COMMENTS

a(n) <> n iff 1 < n <= 14.


LINKS

Table of n, a(n) for n=1..72.
Index entries for sequences that are permutations of the natural numbers
Index entries for linear recurrences with constant coefficients, signature (2,1).


PROG

(PARI) a(n)=if(n>14, n, [1, 12, 2, 8, 9, 3, 13, 4, 14, 5, 10, 7, 6, 11][n]) \\ Charles R Greathouse IV, Sep 02 2011


CROSSREFS

Sequence in context: A036383 A107832 A322521 * A215416 A264970 A287205
Adjacent sequences: A099133 A099134 A099135 * A099137 A099138 A099139


KEYWORD

nonn,easy


AUTHOR

Reinhard Zumkeller, Sep 29 2004


STATUS

approved

