Combined Diophantine Chebyshev sequences A054491 and A077234.

Terms

a(0) =1a(1) =2a(2) =6a(3) =9a(4) =23a(5) =34a(6) =86a(7) =127a(8) =321a(9) =474a(10) =1198a(11) =1769a(12) =4471a(13) =6602a(14) =16686a(15) =24639a(16) =62273a(17) =91954a(18) =232406a(19) =343177a(20) =867351a(21) =1280754a(22) =3236998a(23) =4779839a(24) =12080641a(25) =17838602a(26) =45085566a(27) =66574569a(28) =168261623