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A028781 Nonsquares mod 68. 0
2, 3, 5, 6, 7, 10, 11, 12, 14, 15, 18, 19, 20, 22, 23, 24, 26, 27, 28, 29, 30, 31, 34, 35, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 50, 51, 54, 55, 56, 57, 58, 59, 61, 62, 63, 65, 66, 67 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..50.

CROSSREFS

Sequence in context: A305318 A100118 A295389 * A136149 A101882 A318239

Adjacent sequences:  A028778 A028779 A028780 * A028782 A028783 A028784

KEYWORD

nonn,fini,full

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified February 16 21:59 EST 2019. Contains 320200 sequences. (Running on oeis4.)