Number of solutions to c(1)*prime(4) + ... + c(n)*prime(n+3) = 0, where c(i) = +-1 for i>1, c(1) = 1.
A022903
Number of solutions to c(1)*prime(4) + ... + c(n)*prime(n+3) = 0, where c(i) = +-1 for i>1, c(1) = 1.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =1a(4) =0a(5) =0a(6) =0a(7) =0a(8) =0a(9) =6a(10) =0a(11) =9a(12) =0a(13) =61a(14) =0a(15) =131a(16) =0a(17) =486a(18) =0a(19) =2029a(20) =0a(21) =5890a(22) =0a(23) =21127a(24) =0a(25) =75979a(26) =0a(27) =273657a(28) =0a(29) =1032161
External references
- oeis: A022903