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A025027
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Least non-residue mod n is 19.
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0
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5711, 9239, 10391, 10799, 11422, 14951, 18478, 20782, 21598, 29902, 33049, 34319, 36599, 37489, 40031, 42719, 44641, 49009, 49921, 51769, 53089, 55441, 57119, 59929, 61151, 61871, 63361, 66098, 67369, 67679, 68638, 69001, 71569, 73198, 74978, 75479
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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PROG
| Contribution from Michael B. Porter (michael_b_porter(AT)yahoo.com), Apr 30 2010: (Start)
(PARI) residue(n, m)={local(r); r=0; for(i=1, floor(m/2), if(i^2%m==n, r=1)); r}
isA025027(n)={local(a); a=1; forprime(p=2, 17, a=a && residue(p, n)); a=a && !residue(19, n); a} (End)
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CROSSREFS
| Sequence in context: A192098 A204532 A184147 * A030469 A202376 A183647
Adjacent sequences: A025024 A025025 A025026 * A025028 A025029 A025030
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KEYWORD
| nonn
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AUTHOR
| David W. Wilson (davidwwilson(AT)comcast.net)
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