A129385 -id:A129385 - cp's OEIS frontend

A129386 Records in A129385.

2, 3, 7, 11, 19, 23, 43, 51, 57, 91, 119, 143, 167, 255, 263, 315, 355, 403, 475, 525, 579, 595, 611, 679, 691, 839

Offset: 1

Klaus Brockhaus, Apr 14 2007

			As can be gathered from A129385, the first four records are A129385(0) = 2, A129385(1) = 3, A129385(15) = 7, A129385(23) = 11. Hence a(1) to a(4) are 2, 3, 7, 11.

Cf. A129385, A129387 (where records occur).

lista(nn) = {my(m, q, r); for(k=2, 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(m, ", "); r=m))); } \\ Jinyuan Wang, Dec 04 2020

a(16) inserted by and a(19)-a(26) from Jinyuan Wang, Dec 04 2020

A129387 Where records occur in A129385.

Original entry on oeis.org

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

Klaus Brockhaus, Apr 14 2007

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

Cf. A129385, A129386 (records).

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

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

cp's OEIS Frontend

A129386 Records in A129385.

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