|
Search: id:A125337
|
|
|
| A125337 |
|
Number of base 27 circular n-digit numbers with adjacent digits differing by 3 or less. |
|
+0
1
|
|
| 1, 27, 177, 915, 5545, 33997, 213621, 1359805, 8748521, 56739057, 370374447, 2430484743, 16019733493, 105982096949, 703383900487, 4681112144755, 31228495404521, 208772665807697, 1398339225679299, 9381662291084581
(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: A042420 A055339 A083560 this_sequence A126495 A000499 A042416
Adjacent sequences: A125334 A125335 A125336 this_sequence A125338 A125339 A125340
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Ron Hardin (rhh(AT)cadence.com), Dec 28 2006
|
|
|
Search completed in 0.002 seconds
|
