|
Search: id:A125471
|
|
|
| A125471 |
|
Number of base 14 circular n-digit numbers with adjacent digits differing by 9 or less. |
|
+0
1
|
|
| 1, 14, 176, 2084, 26356, 334784, 4260722, 54242594, 690612444, 8792978324, 111953947446, 1425421218026, 18148766726542, 231073976662790, 2942083286880480, 37459233674496464, 476938975353648908
(list; graph; listen)
|
|
|
OFFSET
|
0,2
|
|
|
COMMENT
|
[Empirical] a(base,n)=a(base-1,n)+F(9) for base>=9.int(n/2)+1, and F(d) is the largest coefficient in (1+x+...+x^(2d))^n
|
|
PROGRAM
|
(S/R) stvar $[N]:(0..M-1) init $[]:=0 asgn $[]->{*} kill +[i in 0..N-1](($[i]`-$[(i+1)mod N]`>9)+($[(i+1)mod N]`-$[i]`>9))
|
|
CROSSREFS
|
Sequence in context: A016136 A061484 A097583 this_sequence A132010 A126866 A133286
Adjacent sequences: A125468 A125469 A125470 this_sequence A125472 A125473 A125474
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Ron Hardin (rhh(AT)cadence.com), Dec 28 2006
|
|
|
Search completed in 0.002 seconds
|
