|
|
A073974
|
|
Number of strings of length n over Z_6 with trace 0 and subtrace 3.
|
|
23
|
|
|
0, 1, 9, 54, 210, 1008, 6300, 40824, 262440, 1679616, 10478160, 62868960, 369476640, 2176782336, 12958657344, 77751944064, 468205557120, 2820249944064, 16957996040448, 101758315958784, 609954817881600, 3656158440062976, 21926486787222528, 131558920723335168
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,3
|
|
LINKS
|
|
|
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
|
|
|
KEYWORD
|
easy,nonn
|
|
AUTHOR
|
|
|
EXTENSIONS
|
|
|
STATUS
|
approved
|
|
|
|