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A028761 Nonsquares mod 48. 2
2, 3, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 17, 18, 19, 20, 21, 22, 23, 24, 26, 27, 28, 29, 30, 31, 32, 34, 35, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..40.

MATHEMATICA

Complement[Range[0, 47], PowerMod[Range[48], 2, 48]] (* Alonso del Arte, Dec 24 2019 *)

PROG

(Scala) (0 to 47).diff((1 to 48).map(n => (n * n) % 48)) // Alonso del Arte, Dec 24 2019

CROSSREFS

Cf. A010409.

Sequence in context: A244218 A164514 A000037 * A028809 A337533 A028785

Adjacent sequences:  A028758 A028759 A028760 * A028762 A028763 A028764

KEYWORD

nonn,fini,full,easy

AUTHOR

N. J. A. Sloane

STATUS

approved

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Last modified September 20 23:24 EDT 2020. Contains 337265 sequences. (Running on oeis4.)