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A079355
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a(1) = 1; a(n) = a(n-1)-3 if n is already in the sequence, a(n) = a(n-1)+4 otherwise.
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1
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1, 5, 9, 13, 10, 14, 18, 22, 19, 16, 20, 24, 21, 18, 22, 19, 23, 20, 17, 14, 11, 8, 5, 2, 6, 10, 14, 18, 22, 26, 30, 34, 38, 35, 32, 36, 40, 37, 41, 38, 35, 39, 43, 47, 51, 55, 52, 56, 60, 64, 61, 58, 62, 66, 63, 60, 64, 61, 65, 62, 59, 56, 53, 50, 47, 44, 48, 52, 56, 60, 64, 68
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OFFSET
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1,2
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LINKS
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FORMULA
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a(n) = n+b(n)-22 where b(n) is the 42-periodic sequence (22, 25, 28, 31, 27, 30, 33, 36, 32, 28, 31, 34, 30, 26, 29, 25, 28, 24, 20, 16, 12, 8, 4, 0, 3, 6, 9, 12, 15, 18, 21, 24, 27, 23, 19, 22, 25, 21, 24, 20, 16, 19)
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CROSSREFS
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KEYWORD
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AUTHOR
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STATUS
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approved
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