|
Search: id:A125362
|
|
|
| A125362 |
|
Number of base 25 circular n-digit numbers with adjacent digits differing by 4 or less. |
|
+0
1
|
|
| 1, 25, 205, 1345, 10325, 80475, 642601, 5201179, 42555989, 351057541, 2915011415, 24333734747, 204025109321, 1716939536441, 14493675325957, 122675396959965, 1040712670097941, 8846367126653991, 75326437255237327
(list; graph; listen)
|
|
|
OFFSET
|
0,2
|
|
|
COMMENT
|
[Empirical] a(base,n)=a(base-1,n)+A025014(n+1) for base>=4.int(n/2)+1
|
|
PROGRAM
|
(S/R) stvar $[N]:(0..M-1) init $[]:=0 asgn $[]->{*} kill +[i in 0..N-1](($[i]`-$[(i+1)mod N]`>4)+($[(i+1)mod N]`-$[i]`>4))
|
|
CROSSREFS
|
Sequence in context: A101775 A017222 A042210 this_sequence A126520 A065939 A077346
Adjacent sequences: A125359 A125360 A125361 this_sequence A125363 A125364 A125365
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Ron Hardin (rhh(AT)cadence.com), Dec 28 2006
|
|
|
Search completed in 0.002 seconds
|
