|
|
A125486
|
|
Number of base 29 circular n-digit numbers with adjacent digits differing by 9 or less.
|
|
0
|
|
|
1, 29, 461, 6149, 94841, 1494029, 24058649, 392382845, 6456869825, 106889962925, 1776707277481, 29612925731429, 494472539606897, 8266744720016461, 138318803993190393, 2315601371476011509
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
0,2
|
|
COMMENTS
|
[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
|
|
LINKS
|
|
|
PROG
|
(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
|
|
|
KEYWORD
|
nonn,base
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|