|
Search: id:A126419
|
|
|
| A126419 |
|
Number of base 32 n-digit numbers with adjacent digits differing by two or less. |
|
+0
4
|
|
| 1, 32, 154, 750, 3668, 17986, 88348, 434524, 2139230, 10540030, 51964360, 256332260, 1265027930, 6245522700, 30845183058, 152383470186, 753018119972, 3722010001906, 18401089523298, 90990129769076, 450009665618408
(list; graph; listen)
|
|
|
OFFSET
|
0,2
|
|
|
COMMENT
|
[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
|
|
PROGRAM
|
(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 32 differing by one or less A126386.
Sequence in context: A100173 A100172 A124998 this_sequence A035286 A029534 A120046
Adjacent sequences: A126416 A126417 A126418 this_sequence A126420 A126421 A126422
|
|
KEYWORD
|
nonn,base
|
|
AUTHOR
|
Ron Hardin (rhhardin(AT)att.net), Dec 28 2006
|
|
|
Search completed in 0.002 seconds
|
