Number of solutions to c(1)*prime(4) + ... + c(n)*prime(n+3) = 1, where c(i) = +-1 for i>1, c(1) = 1.
A022904
Number of solutions to c(1)*prime(4) + ... + c(n)*prime(n+3) = 1, 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) =3a(7) =0a(8) =1a(9) =0a(10) =6a(11) =0a(12) =32a(13) =0a(14) =110a(15) =0a(16) =252a(17) =0a(18) =1139a(19) =0a(20) =3127a(21) =0a(22) =12743a(23) =0a(24) =39767a(25) =0a(26) =156376a(27) =0a(28) =517381a(29) =0
External references
- oeis: A022904