A129387 Where records occur in A129385.

0, 1, 15, 23, 27, 99, 399, 743, 2285, 2683, 13607, 18675, 27299, 66527, 108899, 242087, 504867, 1985907, 2179519, 7883069, 11798723, 20372799, 29842275, 49022007, 70621263, 91817907

Offset: 1

Author

Klaus Brockhaus, Apr 14 2007

Keywords

• nonn
• more

Examples

			The fourth record in A129385 is A129386(4) = 11 = A129385(23), hence a(4) = 23.
		

Crossrefs

Cf. A129385, A129386 (records).

Programs

PARI

lista(nn) = {my(m, q, r); print1(0); for(k=1, nn, if(k%4 && !(k%2 && isprime((k+1)/2)), q=4+k%2; while(!ispower(q, , &m) || !isprime((q+k)/2), q+=2); if(m>r, print1(", ", k); r=m))); } \\ Jinyuan Wang, Dec 05 2020

Extensions

a(16) inserted by and more terms from Jinyuan Wang, Dec 04 2020