Primes p such that sigma((p-1)/2) + tau((p-1)/2) is prime.

A272061

Primes p such that sigma((p-1)/2) + tau((p-1)/2) is prime.

Terms

    a(0) =3a(1) =5a(2) =17a(3) =257a(4) =65537a(5) =453519617a(6) =1372257937a(7) =1927561217a(8) =21320672257a(9) =76001667857a(10) =138388464037

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