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A026262 Beginning with the natural numbers, swap [ k*sqrt(5) ] and [ (k/4)*(5 + sqrt(5)) ], for all k >= 1. 7
2, 1, 4, 3, 6, 5, 8, 7, 11, 13, 9, 15, 10, 17, 12, 20, 14, 22, 24, 16, 26, 18, 29, 19, 31, 21, 33, 35, 23, 38, 25, 40, 27, 42, 28, 44, 46, 30, 49, 32, 51, 34, 53, 36, 55, 37, 58, 60, 39, 62, 41, 64, 43, 67, 45, 69, 71, 47, 73, 48, 76, 50, 78 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Self-inverse integer permutation induced by Beatty sequences for sqrt(5) and (5+sqrt(5))/4. - Reinhard Zumkeller, Jun 11 2005

LINKS

Table of n, a(n) for n=1..63.

Eric Weisstein's World of Mathematics, Beatty Sequence

Index entries for sequences that are permutations of the natural numbers

Index entries for sequences related to Beatty sequences

FORMULA

a(A022839(n))=A108598(n) and a(A108598(n))=A022839(n). - Reinhard Zumkeller, Jun 11 2005

CROSSREFS

Cf. A026250, A026255.

Sequence in context: A306229 A096779 A243500 * A026234 A317630 A282651

Adjacent sequences:  A026259 A026260 A026261 * A026263 A026264 A026265

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified October 22 00:52 EDT 2019. Contains 328315 sequences. (Running on oeis4.)