|
Search: id:A126548
|
|
|
| A126548 |
|
Number of base 27 n-digit numbers with adjacent digits differing by five or less. |
|
+0
1
|
|
| 1, 27, 267, 2717, 27917, 288409, 2989141, 31042303, 322776905, 3358829107, 34968972551, 364173230843, 3793272171773, 39515744665327, 411677827262455, 4289079592113919, 44687156668215307, 465595502937636417
(list; graph; listen)
|
|
|
OFFSET
|
0,2
|
|
|
COMMENT
|
[Empirical] a(base,n)=a(base-1,n)+11^(n-1) for base>=5n-4; a(base,n)=a(base-1,n)+11^(n-1)-2 when base=5n-5
|
|
PROGRAM
|
(S/R) stvar $[N]:(0..M-1) init $[]:=0 asgn $[]->{*} kill +[i in 0..N-2](($[i]`-$[i+1]`>5)+($[i+1]`-$[i]`>5))
|
|
CROSSREFS
|
Cf. Base 27 differing by four or less A126522, three or less A126495, two or less A126414, one or less A126381.
Sequence in context: A101379 A132652 A125390 this_sequence A108670 A136925 A136926
Adjacent sequences: A126545 A126546 A126547 this_sequence A126549 A126550 A126551
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Ron Hardin (rhhardin(AT)att.net), Dec 28 2006
|
|
|
Search completed in 0.002 seconds
|
