Numbers k such that 2^k + 31 is prime.

A247952

Numbers k such that 2^k + 31 is prime.

Terms

    a(0) =4a(1) =12a(2) =36a(3) =540a(4) =844a(5) =1192a(6) =12136a(7) =84280a(8) =128356a(9) =317464a(10) =3018556

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