|
Search: id:A125322
|
|
|
| A125322 |
|
Number of base 12 circular n-digit numbers with adjacent digits differing by 3 or less. |
|
+0
1
|
|
| 1, 12, 72, 360, 2080, 12232, 73656, 449440, 2770016, 17195112, 107304872, 672224048, 4223186080, 26586825472, 167628931360, 1058056409920, 6683674433920, 42244783230496, 267124015799712, 1689602502335776
(list; graph; listen)
|
|
|
OFFSET
|
0,2
|
|
|
COMMENT
|
[Empirical] a(base,n)=a(base-1,n)+A025012(n+1) for base>=3.int(n/2)+1
|
|
PROGRAM
|
(S/R) stvar $[N]:(0..M-1) init $[]:=0 asgn $[]->{*} kill +[i in 0..N-1](($[i]`-$[(i+1)mod N]`>3)+($[(i+1)mod N]`-$[i]`>3))
|
|
CROSSREFS
|
Sequence in context: A036392 A035472 A036398 this_sequence A126480 A030235 A088166
Adjacent sequences: A125319 A125320 A125321 this_sequence A125323 A125324 A125325
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Ron Hardin (rhhardin(AT)att.net), Dec 28 2006
|
|
|
Search completed in 0.002 seconds
|
