|
Search: id:A126483
|
|
|
| A126483 |
|
Number of base 15 n-digit numbers with adjacent digits differing by three or less. |
|
+0
3
|
|
| 1, 15, 93, 595, 3845, 24983, 162805, 1062635, 6941843, 45369865, 296598577, 1939229883, 12680054343, 82914396455, 542185539797, 3545445779213, 23184429833549, 151608454599649, 991405196934357, 6483050068051005
(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 15 differing by two or less A126402, one or less A126369.
Sequence in context: A052226 A108684 A125325 this_sequence A114240 A052459 A044266
Adjacent sequences: A126480 A126481 A126482 this_sequence A126484 A126485 A126486
|
|
KEYWORD
|
nonn,base
|
|
AUTHOR
|
Ron Hardin (rhhardin(AT)att.net), Dec 27 2006
|
|
|
Search completed in 0.002 seconds
|
