A023631 - OEIS

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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, 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; text; internal format)

OFFSET

1,2

LINKS

Table of n, a(n) for n=1..63.

CROSSREFS

Sequence in context: A096887 A340161 A268574 * A080641 A272632 A229744

Adjacent sequences: A023628 A023629 A023630 * A023632 A023633 A023634

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved