A158852 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 A158759

1, 0, 0, 1, 0, 2, 2, 0, 1, 5, 0, 3, 5, 0, 7, 19, 0, 8, 10, 0, 21, 52, 0, 26, 43, 0, 66, 205, 0, 79, 92, 0, 217, 397, 0, 279, 444, 0, 683, 1651, 0, 625, 1009, 0, 2135, 4831, 0, 3063, 3682, 0, 6851

Offset

8,6

Links

Table of n, a(n) for n=8..58.

Crossrefs

Cf. A156537 A158759 A156284

Sequence in context: A146326 A276727 A267617 * A188285 A273899 A102404

Adjacent sequences: A158849 A158850 A158851 * A158853 A158854 A158855

Keyword

nonn,uned

Author

Vladimir Shevelev, Mar 28 2009

Status

approved