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Table of n, a(n) for n=1..26.
(PARI) a(p)=if(p<0, 0, k=1; while(abs(p-qfbclassno(-4*k))>0, k++); k)
Sequence in context: A222476 A097056 A092358 * A106953 A149503 A149504
Adjacent sequences: A079026 A079027 A079028 * A079030 A079031 A079032
Benoit Cloitre, Feb 01 2003