1,2

Same as the number of strings of length n over Z_5 with trace 2 and subtrace 0. Same as the number of strings of length n over Z_5 with trace 3 and subtrace 0. Same as the number of strings of length n over Z_5 with trace 4 and subtrace 0. Same as the number of strings of length n over GF(5) with trace 2 and subtrace 0. Same as the number of strings of length n over GF(5) with trace 3 and subtrace 0.

F. Ruskey, Strings over Z_5 of given trace and subtrace

F. Ruskey, Strings over GF(5) of given trace and subtrace

a(n; t, s) = a(n-1; t, s) + a(n-1; t+4, s+4t+1) + a(n-1; t+3, s+3t+4) + a(n-1; t+2, s+2t+4) + a(n-1; t+1, s+t+1)

Cf. A073963, A073964, A073965, A073967, A073968, A073969, A073970.

Sequence in context: A136795 A074115 A013206 this_sequence A013203 A007847 A074008

Adjacent sequences: A073963 A073964 A073965 this_sequence A073967 A073968 A073969

easy,nonn

Frank Ruskey, Nate Kube (fruskey(AT)cs.uvic.ca), Aug 15 2002