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A079029 Least k such that the class number of quadratic order of discriminant D=-4k equals p, where p runs through the primes. 0
5, 11, 47, 71, 167, 191, 383, 311, 647, 887, 719, 1487, 1151, 1847, 3023, 2711, 2399, 3863, 3719, 5471, 2999, 4391, 3911, 6311, 5519, 5879, 13799, 8231, 5711, 8039, 19463, 12671, 15287, 9239, 17783, 22727, 25847, 40039, 15671, 14159, 17519, 14759, 22271, 26591 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..44.

PROG

(PARI) a(n) = {my(k=1, p=prime(n)); while(abs(p-qfbclassno(-4*k))>0, k++); k; }

CROSSREFS

Cf. A000003.

Sequence in context: A222476 A097056 A092358 * A106953 A297445 A149503

Adjacent sequences:  A079026 A079027 A079028 * A079030 A079031 A079032

KEYWORD

nonn

AUTHOR

Benoit Cloitre, Feb 01 2003

EXTENSIONS

More terms from Jinyuan Wang, Apr 03 2020

STATUS

approved

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Last modified January 22 21:47 EST 2022. Contains 350504 sequences. (Running on oeis4.)