1,1

Conjecture: there are no more terms.

Table of n, a(n) for n=1..5.

Index entries for sequences related to Goldbach conjecture.

62=4*15+2 is a term, as p = 3 modulo 4 for all primes p in decompositions of 62 into sum of two primes: 3+59=11+51=19+43=31+31;

66=4*16+2 is not a term, as e.g. 66=5+61=(4*1+1)+(4*15+1): A071635(16)>0.

Cf. A002144, A002145.

Sequence in context: A026598 A006864 A217420 * A263758 A100067 A026597

Adjacent sequences: A071633 A071634 A071635 * A071637 A071638 A071639

nonn

Reinhard Zumkeller, May 27 2002

approved