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A081448
a(n) = sqrt( A081447(n) )/6.
2
1, 4, 1, 2, 2, 1, 1, 1, 2, 1, 2, 1, 2, 2, 1, 2, 1, 1, 3, 1, 3, 2, 5, 2, 4, 3, 4, 1, 2, 3, 5, 1, 7, 1, 1, 1, 2, 8, 1, 8, 3, 1, 2, 11, 2, 5, 5, 5, 6, 1, 1, 2, 3, 1, 2, 6, 4, 5, 7, 1, 7, 4, 7, 3, 2, 1, 2, 25, 6, 4, 2, 1, 7, 2, 1, 4, 4, 3, 1, 3, 2, 1, 10, 3, 5, 2, 1, 1, 1, 2, 4, 3, 2, 17, 9, 2, 9, 3, 9, 2
OFFSET
1,2
COMMENTS
Partial maxima are in A081452.
PROG
(PARI) t=5; for(n=2, 100, for(k=1, 10^8, if(isprime(k^2+t), print1(k/6", "); t=t+k^2; break)))
CROSSREFS
Cf. A081447.
Sequence in context: A300657 A370120 A112621 * A322906 A106437 A279605
KEYWORD
nonn
AUTHOR
Ralf Stephan, Mar 21 2003
STATUS
approved