A129386 - OEIS

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

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..26.

EXAMPLE

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.

PROG

(PARI) 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

CROSSREFS

Cf. A129385, A129387 (where records occur).

Sequence in context: A214029 A195602 A105897 * A278699 A238569 A064270

Adjacent sequences: A129383 A129384 A129385 * A129387 A129388 A129389

KEYWORD

nonn,more

AUTHOR

Klaus Brockhaus, Apr 14 2007

EXTENSIONS

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

STATUS

approved