(17^n - 1)/(2^(5 - (n % 2))).

A152437

(17^n - 1)/(2^(5 - (n % 2))).

Terms

    a(0) =0a(1) =1a(2) =9a(3) =307a(4) =2610a(5) =88741a(6) =754299a(7) =25646167a(8) =217992420a(9) =7411742281a(10) =62999809389

External references