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A023631 a(n) = c([ (n+1)/2 ]) + n, with a(1) = 1 and a(2) = 4, c = complement to a. 1
1, 4, 6, 7, 10, 11, 15, 16, 18, 19, 23, 24, 26, 27, 29, 30, 34, 35, 39, 40, 42, 43, 45, 46, 50, 51, 55, 56, 60, 61, 63, 64, 66, 67, 71, 72, 74, 75, 77, 78, 82, 83, 87, 88, 92, 93, 95, 96, 98, 99, 103, 104, 106, 107, 109, 110, 114, 115, 117, 118, 120, 121, 125 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

CROSSREFS

Sequence in context: A026147 A032785 A096887 * A080641 A191920 A047234

Adjacent sequences:  A023628 A023629 A023630 * A023632 A023633 A023634

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified February 15 05:45 EST 2012. Contains 205694 sequences.