Number of cyclotomic cosets of 3 mod 10^n.

Terms

a(0) =4a(1) =11a(2) =29a(3) =71a(4) =129a(5) =203a(6) =293a(7) =399a(8) =521a(9) =659a(10) =813a(11) =983a(12) =1169a(13) =1371a(14) =1589a(15) =1823a(16) =2073a(17) =2339a(18) =2621a(19) =2919a(20) =3233a(21) =3563a(22) =3909a(23) =4271a(24) =4649a(25) =5043a(26) =5453a(27) =5879a(28) =6321a(29) =6779