Numbers n such that n remains prime through 7 iterations of function f(x) = 2x + 5.

A129931

Numbers n such that n remains prime through 7 iterations of function f(x) = 2x + 5.

Terms

    a(0) =4594309a(1) =4921129a(2) =5495989a(3) =7093057a(4) =14722021a(5) =23008891a(6) =23380471a(7) =24251167a(8) =24296563a(9) =49201981a(10) =51788797a(11) =62123011a(12) =64649503a(13) =69326779a(14) =78274321a(15) =88022797a(16) =95575771a(17) =100099267a(18) =125796127a(19) =128185777a(20) =129299011a(21) =130858711

External references