A050658 Numbers n such that number of primes produced according to rules stipulated in Honaker's A048853 is 7.
11, 17, 19, 21, 27, 39, 43, 51, 57, 69, 73, 81, 87, 93, 151, 179, 189, 203, 207, 211, 227, 233, 239, 241, 249, 251, 271, 277, 281, 299, 301, 303, 313, 323, 329, 351, 353, 371, 373, 381, 391, 403, 413, 423, 457, 467, 479, 509, 511, 513, 519, 531, 533, 537, 547
Offset: 1
Examples
Altering a(4)=21 gives 7 primes: 11, 31, 41, 61, 71, 23 and 29.