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A129386
Records in A129385.
2
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
1,1
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
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