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13, 61, 73, 109, 151, 181, 229, 241, 257, 293, 307, 313, 349, 353, 373, 397, 409, 487, 509, 557, 571, 577, 601, 613, 643, 653, 661, 709, 727, 733, 739, 751, 761, 773, 811, 823, 937, 941, 977
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OFFSET
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1,1
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COMMENTS
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It has been asked whether A146071 contains all primes. The answer is no: since A075255(n) > n/2-2 for nonprime n, any prime p that did not appear until the rank 2(p+2) is not in A075255. This is a sufficient condition for not being in A146071, but unless proved otherwise, there may be primes in A075255, i.e., not listed here, which nevertheless do not appear in A146071.
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LINKS
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PROG
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(PARI) A146764( END=999 )=local( n=1, t=0, k); forprime( p=1, END, while( n<2*(p+2), isprime( k=A075255(n++)) || next; t=bitor(1<<primepi(k), t)); bittest(t, primepi(p)) || print1(p", "))
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CROSSREFS
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KEYWORD
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easy,nonn
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AUTHOR
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STATUS
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approved
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