|
| |
|
|
A073993
|
|
Number of strings of length n over Z_6 with trace 3 and subtrace 4.
|
|
23
| | |
|
|
|
OFFSET
| 1,4
|
|
|
LINKS
| F. Ruskey Number of strings over Z_6 of given trace and subtrace
|
|
|
FORMULA
| a(n; t, s) = a(n-1; t, s) + a(n-1; t+5, s+5t+1) + a(n-1; t+4, s+4t+4) + a(n-1; t+3, s+3t+3) + a(n-1; t+2, s+2t+2) + a(n-1; t+1, s+t+1) where t is the trace and s is the subtrace.
|
|
|
CROSSREFS
| Cf. A073971, A073972, A073973, A073974, A073975, A073976, A073977, A073978, A073979, A073980, A073981, A073982, A073983, A073984, A073985, A073986, A073987, A073988, A073989, A073990, A073991, A073992, A073994.
Sequence in context: A166756 A165187 A052761 * A052758 A143040 A128960
Adjacent sequences: A073990 A073991 A073992 * A073994 A073995 A073996
|
|
|
KEYWORD
| easy,nonn
|
|
|
AUTHOR
| Frank Ruskey, Nate Kube (ruskey(AT)cs.uvic.ca), Aug 16 2002
|
| |
|
|
