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A081450 a(n) = sqrt(A081449(n))/6. 2
1, 1, 2, 1, 3, 5, 2, 4, 2, 1, 4, 7, 2, 2, 6, 1, 1, 8, 2, 3, 5, 14, 6, 6, 2, 1, 5, 17, 2, 2, 1, 10, 1, 4, 5, 5, 3, 1, 8, 7, 2, 4, 2, 4, 2, 1, 1, 1, 2, 7, 4, 3, 2, 5, 9, 3, 1, 7, 4, 3, 10, 1, 2, 10, 9, 1, 1, 5, 2, 2, 1, 3, 1, 2, 15, 1, 1, 5, 3, 5, 1, 8, 2, 4, 1, 5, 2, 7, 1, 4, 2, 1, 23, 4, 2, 1, 3, 2, 7 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Partial maxima are in A081453.

LINKS

Table of n, a(n) for n=1..99.

PROG

(PARI) t=17; for(n=2, 200, for(k=1, 10^8, if(isprime(k^2+t), print1(k/6", "); t=t+k^2; break)))

CROSSREFS

Cf. A081449.

Sequence in context: A157127 A066748 A106583 * A248408 A210880 A210867

Adjacent sequences:  A081447 A081448 A081449 * A081451 A081452 A081453

KEYWORD

nonn

AUTHOR

Ralf Stephan, Mar 21 2003

STATUS

approved

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Last modified September 21 19:23 EDT 2021. Contains 347598 sequences. (Running on oeis4.)