1,2

Same as the number of strings of length n over Z_5 with trace 0 and subtrace 4. Same as the number of strings of length n over GF(5) with trace 0 and subtrace 1. Same as the number of strings of length n over GF(5) with trace 0 and subtrace 4.

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, A073965, A073966, A073967, A073968, A073969, A073970.

Sequence in context: A026991 A049379 A003094 this_sequence A079457 A079455 A052433

Adjacent sequences: A073961 A073962 A073963 this_sequence A073965 A073966 A073967

easy,nonn

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