Number of solutions to +-p(1)+-p(2)+-...+-p(2n) = 3 where p(i) is the i-th prime.

A113042

Number of solutions to +-p(1)+-p(2)+-...+-p(2n) = 3 where p(i) is the i-th prime.

Terms

    a(0) =0a(1) =2a(2) =1a(3) =7a(4) =15a(5) =45a(6) =139a(7) =438a(8) =1419a(9) =4703a(10) =16019a(11) =55146a(12) =190254a(13) =671215a(14) =2404179a(15) =8534995a(16) =30635448a(17) =110495549a(18) =401418693a(19) =1467388464a(20) =5393131894a(21) =19883104535a(22) =73856058401a(23) =273600682457

External references