|
Search: id:A126485
|
|
|
| A126485 |
|
Number of base 17 n-digit numbers with adjacent digits differing by three or less. |
|
+0
3
|
|
| 1, 17, 107, 693, 4531, 29785, 196419, 1297863, 8586301, 56847741, 376551555, 2494950507, 16533981983, 109582499195, 726331242669, 4814449605487, 31913168495095, 211543760702517, 1402280350135071, 9295487072185279
(list; graph; listen)
|
|
|
OFFSET
|
0,2
|
|
|
COMMENT
|
[Empirical] a(base,n)=a(base-1,n)+7^(n-1) for base>=3n-2; a(base,n)=a(base-1,n)+7^(n-1)-2 when base=3n-3
|
|
PROGRAM
|
(S/R) stvar $[N]:(0..M-1) init $[]:=0 asgn $[]->{*} kill +[i in 0..N-2](($[i]`-$[i+1]`>3)+($[i+1]`-$[i]`>3))
|
|
CROSSREFS
|
Cf. Base 17 differing by two or less A126404, one or less A126371.
Sequence in context: A142321 A007682 A125327 this_sequence A159031 A080441 A135400
Adjacent sequences: A126482 A126483 A126484 this_sequence A126486 A126487 A126488
|
|
KEYWORD
|
nonn,base
|
|
AUTHOR
|
Ron Hardin (rhhardin(AT)att.net), Dec 27 2006
|
|
|
Search completed in 0.002 seconds
|
