a(n) is the least prime p such that the 2-adic valuation of p+q is n, where q is the next prime after p, or 0 if there is no such p.
A340117
a(n) is the least prime p such that the 2-adic valuation of p+q is n, where q is the next prime after p, or 0 if there is no such p.
Terms
- a(0) =2a(1) =7a(2) =5a(3) =3a(4) =53a(5) =139a(6) =157a(7) =61a(8) =1151a(9) =3833a(10) =6653a(11) =7159a(12) =30713a(13) =4093a(14) =204797a(15) =311293a(16) =360439a(17) =2555897a(18) =3014653a(19) =786431a(20) =11010037a(21) =5242877a(22) =73400311a(23) =138412031a(24) =461373431a(25) =1124073463a(26) =436207613a(27) =3288334303a(28) =10066329587a(29) =1879048183
External references
- oeis: A340117