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A038905 31 is a square mod p. 0
2, 3, 5, 11, 23, 31, 41, 43, 79, 83, 97, 101, 109, 113, 127, 139, 149, 151, 157, 167, 173, 179, 193, 199, 223, 233, 239, 251, 257, 263, 271, 281, 293, 317, 331, 347, 349, 367, 373, 383, 397, 421, 463, 487, 491 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

Also, only entries p=1 (mod 4) of the sequence are squares mod 31 (from the quadratic reciprocity law). - Lekraj Beedassy (blekraj(AT)yahoo.com), Jul 21 2004

CROSSREFS

Sequence in context: A005384 A118571 A118504 * A019405 A079848 A073434

Adjacent sequences:  A038902 A038903 A038904 * A038906 A038907 A038908

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified February 14 23:53 EST 2012. Contains 205689 sequences.