a(n), a(n+1), a(n+2), for n=5,8,11,... are respectively the numbers of representations of the integers 2^k-2, 2^k, 2^k+2, where k=(n+4)/3, by unordered sums of two odd primes not belonging to A158847.

A158855

a(n), a(n+1), a(n+2), for n=5,8,11,... are respectively the numbers of representations of the integers 2^k-2, 2^k, 2^k+2, where k=(n+4)/3, by unordered sums of two odd primes not belonging to A158847.

Terms

    a(0) =2a(1) =0a(2) =2a(3) =5a(4) =0a(5) =4a(6) =6a(7) =0a(8) =7a(9) =18a(10) =0a(11) =8a(12) =10a(13) =0a(14) =23a(15) =51a(16) =0a(17) =25a(18) =43a(19) =0a(20) =68a(21) =206a(22) =0a(23) =79a(24) =93a(25) =0a(26) =214a(27) =397a(28) =0a(29) =280

External references