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A125415 Number of base 27 circular n-digit numbers with adjacent digits differing by 6 or less. 0
1, 27, 309, 2883, 31361, 347507, 3942849, 45357283, 527368217, 6180793077, 72890540049, 863812188167, 10276686529385, 122640156381419, 1467200048583879, 17587676571419633, 211163124573990697 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
COMMENTS
[Empirical] a(base,n)=a(base-1,n)+F(6) for base>=6.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]`-$[(i+1)mod N]`>6)+($[(i+1)mod N]`-$[i]`>6))
CROSSREFS
Sequence in context: A083813 A086574 A274832 * A119295 A048396 A061181
KEYWORD
nonn,base
AUTHOR
R. H. Hardin, Dec 28 2006
STATUS
approved

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Last modified February 29 07:09 EST 2024. Contains 370414 sequences. (Running on oeis4.)