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A125352 Number of base 15 circular n-digit numbers with adjacent digits differing by 4 or less. 0

%I #7 Mar 31 2012 12:35:01

%S 1,15,115,735,5435,40965,315991,2469909,19495747,154956453,1237813755,

%T 9923510469,79762415747,642295225197,5178982417003,41798669030805,

%U 337575342572995,2727627544083901,22046802610388635,178241899736229829

%N Number of base 15 circular n-digit numbers with adjacent digits differing by 4 or less.

%C [Empirical] a(base,n)=a(base-1,n)+A025014(n+1) for base>=4.int(n/2)+1

%o (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))

%K nonn,base

%O 0,2

%A _R. H. Hardin_, Dec 28 2006

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Last modified May 11 07:10 EDT 2024. Contains 372388 sequences. (Running on oeis4.)