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A084493
a(n) = n + A084511(n) - 3.
5
1, 3, 2, 5, 6, 4, 9, 7, 8, 12, 11, 10, 14, 15, 16, 13, 18, 20, 17, 19, 22, 24, 23, 21, 27, 25, 28, 26, 31, 30, 32, 29, 35, 36, 33, 34, 39, 40, 38, 37, 44, 41, 42, 43, 48, 45, 47, 46, 52, 50, 49, 51, 56, 54, 55, 53, 60, 59, 57, 58, 64, 63, 62, 61, 66, 67, 69, 65, 68, 71, 73, 70
OFFSET
1,2
CROSSREFS
KEYWORD
nonn
AUTHOR
Antti Karttunen, Jun 02 2003
STATUS
approved