Number of solutions to c(1)*prime(4)+...+c(n)*prime(n+3) = -2, where c(i) = +-1 for i > 1, c(1) = 1.
A261044
Number of solutions to c(1)*prime(4)+...+c(n)*prime(n+3) = -2, where c(i) = +-1 for i > 1, c(1) = 1.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =2a(8) =0a(9) =5a(10) =0a(11) =18a(12) =0a(13) =48a(14) =0a(15) =170a(16) =0a(17) =540a(18) =0a(19) =1868a(20) =0a(21) =6385a(22) =0a(23) =22247a(24) =0a(25) =79355a(26) =0a(27) =282754a(28) =0a(29) =1008714
External references
- oeis: A261044