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A361735
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Modified semi-Padovan sequence: a(2*n) = a(n) and a(2*n+1) = a(2*n-1) + a(2*n-2), with a(0) = 0 and a(1) = 1.
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3
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0, 1, 1, 1, 1, 2, 1, 3, 1, 4, 2, 5, 1, 7, 3, 8, 1, 11, 4, 12, 2, 16, 5, 18, 1, 23, 7, 24, 3, 31, 8, 34, 1, 42, 11, 43, 4, 54, 12, 58, 2, 70, 16, 72, 5, 88, 18, 93, 1, 111, 23, 112, 7, 135, 24, 142, 3, 166, 31, 169, 8, 200, 34, 208, 1, 242, 42, 243, 11, 285, 43
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OFFSET
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0,6
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LINKS
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MAPLE
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a:= proc(n) option remember; `if`(n<2, n,
`if`(n::even, a(n/2), a(n-2)+a(n-3)))
end:
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PROG
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(PARI) a(n) = if (n <= 1, return(n)); if (n%2, a(n-2) + a(n-3), a(n/2));
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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