login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A050669
Primes p such that number of primes produced according to rules stipulated in Honaker's A048853 is 7.
1
11, 17, 19, 43, 73, 151, 179, 211, 227, 233, 239, 241, 251, 271, 277, 281, 313, 353, 373, 457, 467, 479, 509, 547, 607, 631, 691, 809, 821, 839, 859, 863, 877, 911, 937, 941, 991, 1097, 1129, 1171, 1181, 1201, 1249, 1367, 1381, 1427, 1447, 1579, 1597
OFFSET
1,1
EXAMPLE
Altering a(1)=11 gives 7 primes: 31, 41, 61, 71, 13, 17 and 19.
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Patrick De Geest, Jul 15 1999
STATUS
approved