Number of solutions to +-p(1)+-p(2)+-...+-p(2n)=1 where p(i) is the i-th prime.
A113040
Number of solutions to +-p(1)+-p(2)+-...+-p(2n)=1 where p(i) is the i-th prime.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =6a(4) =16a(5) =45a(6) =138a(7) =439a(8) =1417a(9) =4698a(10) =16021a(11) =55146a(12) =190274a(13) =671224a(14) =2404289a(15) =8535117a(16) =30635869a(17) =110496946a(18) =401422210a(19) =1467402238a(20) =5393176633a(21) =19883249002a(22) =73856531314a(23) =273602448261
External references
- oeis: A113040