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A252892
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Primes p such that sigma(p) = 1 + p is a partition number (sorted increasingly).
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0
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2, 29, 41, 6841, 37337, 53173, 105557, 124753, 614153, 26543659, 541946239, 2841940499, 3519222691, 30388671977, 6622987708039, 3925922161489421, 1089657644424399781, 9147679068859117601, 13196258966925435701, 505499305314204629557, 2715220650772245313219
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OFFSET
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1,1
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COMMENTS
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Primes of the form p(k) - 1, where p(k) is a partition number (see A000040).
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LINKS
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EXAMPLE
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41 is in the sequence because 41 is prime and the sum of divisors of 41 is 1 + 41 = 42 and 42 is the partition number of 10.
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PROG
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(PARI) lista() = {v = readvec("b000041.txt"); for (n=1, #v, if (isprime(p=v[n]-1), print1(p, ", ")); ); } \\ Michel Marcus, Dec 29 2014
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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