A124956 - OEIS

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A124956

Number of base 28 circular n-digit numbers with adjacent digits differing by 2 or less.

1, 28, 134, 502, 2202, 9718, 44000, 201628, 933682, 4357222, 20462184, 96587068, 457871484, 2178414292, 10396478562, 49751026042, 238639567362, 1147064158822, 5523799769432, 26644582803412, 128714976934252 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	COMMENTS	`[Empirical] a(base,n)=a(base-1,n)+A005191(n+1) for base>=2.int(n/2)+1`
	PROG	(S/R) stvar $[N]:(0..M-1) init $[]:=0 asgn $[]->{*} kill +[i in 0..N-1](($[i]`-$[(i+1)mod N]`>2)+($[(i+1)mod N]`-$[i]`>2))
	CROSSREFS	`Sequence in context: A184679 A123376 A192796 * A014705 A126415 A187047` `Adjacent sequences: A124953 A124954 A124955 * A124957 A124958 A124959`
	KEYWORD	`nonn,base`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net), Dec 28 2006`

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Last modified February 14 18:47 EST 2012. Contains 205663 sequences.