|
| |
|
|
A126399
|
|
Number of base 12 n-digit numbers with adjacent digits differing by two or less.
|
|
3
| |
|
|
1, 12, 54, 250, 1168, 5486, 25848, 122024, 576748, 2728038, 12909648, 61108496, 289310874, 1369855464, 6486547342, 30716393200, 145458062754, 688830120102, 3262050022332, 15447978818780, 73156731187376, 346447866034700
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 0,2
|
|
|
COMMENTS
| [Empirical] a(base,n)=a(base-1,n)+5^(n-1) for base>=2n-1; a(base,n)=a(base-1,n)+5^(n-1)-2 when base=2n-2
|
|
|
PROG
| (S/R) stvar $[N]:(0..M-1) init $[]:=0 asgn $[]->{*} kill +[i in 0..N-2](($[i]`-$[i+1]`>2)+($[i+1]`-$[i]`>2))
|
|
|
CROSSREFS
| Cf. Base 12 differing by one or less A126366.
Sequence in context: A005549 A124858 A183713 * A137938 A009726 A190948
Adjacent sequences: A126396 A126397 A126398 * A126400 A126401 A126402
|
|
|
KEYWORD
| nonn,base
|
|
|
AUTHOR
| R. H. Hardin (rhhardin(AT)att.net), Dec 28 2006
|
| |
|
|
