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A073108
Least k such that there are n primes among the numbers n^2 + x^2 for 1 <= x <= k.
0
1, 3, 10, 11, 16, 29, 38, 35, 64, 29, 54, 107, 58, 69, 92, 85, 82, 163, 124, 81, 190, 155, 142, 241, 116, 139, 338, 213, 176, 221, 214, 223, 520, 211, 184, 361, 278, 267, 400, 179, 294, 607, 288, 335, 362, 379, 342, 587, 394, 261
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OFFSET
1,2
LINKS
Table of n, a(n) for n=1..50.
PROG
(PARI) a(n)=if(n<0, 0, s=1; while(sum(k=1, s, isprime(k^2+n^2))<n, s++); s)
CROSSREFS
Sequence in context:
A357708
A169939
A357627
*
A390531
A352776
A255160
Adjacent sequences:
A073105
A073106
A073107
*
A073109
A073110
A073111
KEYWORD
easy
,
nonn
AUTHOR
Benoit Cloitre
, Aug 19 2002
STATUS
approved
