|
Search: id:A126479
|
|
|
| A126479 |
|
Number of base 11 n-digit numbers with adjacent digits differing by three or less. |
|
+0
3
|
|
| 1, 11, 65, 399, 2473, 15381, 95757, 596341, 3714153, 23133309, 144085281, 897434333, 5589669241, 34815260805, 216846906193, 1350631326317, 8412409590489, 52396708044853, 326352989158113, 2032690173290461
(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 11 differing by two or less A126398, one or less A126365.
Sequence in context: A036601 A125321 A054490 this_sequence A139611 A063842 A008503
Adjacent sequences: A126476 A126477 A126478 this_sequence A126480 A126481 A126482
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Ron Hardin (rhh(AT)cadence.com), Dec 27 2006
|
|
|
Search completed in 0.002 seconds
|
