Number of solutions to c(1)*prime(1) + ... + c(n)*prime(n) = 1, where c(i) = +-1 for i > 1, c(1) = 1.
A022895
Number of solutions to c(1)*prime(1) + ... + c(n)*prime(n) = 1, where c(i) = +-1 for i > 1, c(1) = 1.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =1a(4) =0a(5) =1a(6) =0a(7) =3a(8) =0a(9) =8a(10) =0a(11) =22a(12) =0a(13) =70a(14) =0a(15) =218a(16) =0a(17) =708a(18) =0a(19) =2354a(20) =0a(21) =8015a(22) =0a(23) =27561a(24) =0a(25) =95160a(26) =0a(27) =335579a(28) =0a(29) =1202236
External references
- oeis: A022895