Number of strings of length n over Z_5 with trace 1 and subtrace 4.

A073970

Number of strings of length n over Z_5 with trace 1 and subtrace 4.

Terms

    a(0) =0a(1) =1a(2) =6a(3) =30a(4) =125a(5) =600a(6) =3025a(7) =15500a(8) =78000a(9) =390625a(10) =1952500a(11) =9765625a(12) =48831250a(13) =244156250a(14) =1220703125a(15) =6103437500a(16) =30517265625a(17) =152587500000a(18) =762939062500

External references