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A228541
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Numbers having at least one prime factor of the form 30*k + 1.
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1
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31, 61, 62, 93, 122, 124, 151, 155, 181, 183, 186, 211, 217, 241, 244, 248, 271, 279, 302, 305, 310, 331, 341, 362, 366, 372, 403, 421, 422, 427, 434, 453, 465, 482, 488, 496, 527, 541, 542, 543, 549, 558, 571, 589, 601, 604, 610, 620, 631, 633, 651, 661, 662
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OFFSET
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1,1
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COMMENTS
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Together with 2, supersequence of A228556.
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LINKS
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EXAMPLE
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183 = 3*61 is in the sequence because 30*2 + 1 is prime.
211 is in the sequence because it is prime and 211 = 30*7 + 1.
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PROG
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(PARI) for(n=31, 662, if(setsearch(Set(factor(n)[, 1]%30), 1)==1, print1(n, ", ")));
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CROSSREFS
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KEYWORD
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nonn,less
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AUTHOR
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STATUS
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approved
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