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A079151
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Primes p such that p-1 has at most 3 prime factors, counted with multiplicity; i.e. primes p such that bigomega(p+1) = A001222(p+1) <= 3.
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4
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2, 3, 5, 7, 11, 13, 19, 23, 29, 31, 43, 47, 53, 59, 67, 71, 79, 83, 103, 107, 131, 139, 149, 167, 173, 179, 191, 223, 227, 239, 263, 269, 283, 293, 311, 317, 347, 359, 367, 383, 389, 419, 431, 439, 443, 467, 479, 499, 503, 509, 557, 563, 587, 599, 607, 619, 643
(list; graph; refs; listen; history; internal format)
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