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

2, 0, 2, 5, 0, 4, 6, 0, 7, 18, 0, 8, 10, 0, 23, 51, 0, 25, 43, 0, 68, 206, 0, 79, 93, 0, 214, 397, 0, 280, 445, 0, 684, 1650, 0, 630, 1008, 0, 2136, 4894, 0, 3065, 3682, 0, 6853

Offset

14,1

Links

Table of n, a(n) for n=14..58.

Crossrefs

A158847 A156537

Sequence in context: A324045 A358405 A209701 * A344908 A005074 A161564

Adjacent sequences: A158852 A158853 A158854 * A158856 A158857 A158858

Keyword

nonn,uned

Author

Vladimir Shevelev, Mar 28 2009

Status

approved