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A137623
1
1, 2, 3, 4, 8, 5, 10, 6, 12, 14, 9, 16, 18, 20, 11, 24, 25, 7, 13, 27, 28, 15, 30, 32, 33, 34, 36, 19, 21, 38, 39, 40, 22, 44, 45, 23, 48, 50, 51, 26, 52, 55, 56, 57, 29, 58, 31, 62, 63, 64, 17, 65, 68, 35, 70, 72, 37, 74, 75, 77, 78, 80, 41, 42, 84, 85, 43, 86, 87, 90, 91, 46
OFFSET
1,2
CROSSREFS
Sequence in context: A320504 A376189 A181799 * A358875 A191541 A122398
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Jan 30 2008
STATUS
approved