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A137805
Self-inverse integer permutation induced by Beatty sequences for Sqrt(2)+1/2 and (4*Sqrt(2)+9)/7.
3
2, 1, 4, 3, 6, 5, 8, 7, 10, 9, 12, 11, 14, 13, 16, 15, 18, 17, 20, 19, 23, 25, 21, 27, 22, 29, 24, 31, 26, 33, 28, 35, 30, 37, 32, 39, 34, 41, 36, 43, 38, 46, 40, 48, 50, 42, 52, 44, 54, 45, 56, 47, 58, 49, 60, 51, 62, 53, 64, 55, 67, 57, 69, 59, 71, 73, 61, 75, 63, 77, 65, 79
OFFSET
1,1
FORMULA
a(A137803(n)) = A137804(n) and a(A137804(n)) = A137803(n).
CROSSREFS
Sequence in context: A114285 A014681 A103889 * A163501 A306229 A375757
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Feb 11 2008
STATUS
approved