a(0)=0; for n>0, a(n) = A102371(4n)/4.

A104403

a(0)=0; for n>0, a(n) = A102371(4n)/4.

Terms

    a(0) =0a(1) =3a(2) =62a(3) =1021a(4) =16380a(5) =262143a(6) =4194298a(7) =67108857a(8) =1073741816a(9) =17179869179a(10) =274877906934

External references