A124954 - OEIS

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A124954

Number of base 26 circular n-digit numbers with adjacent digits differing by 2 or less.

1, 26, 124, 464, 2032, 8956, 40498, 185358, 857352, 3996572, 18748294, 88404078, 418649134, 1989796094, 9486867052, 45353726944, 217336589784, 1043666874012, 5021108669734, 24196986793782, 116781703334762 (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: A051729 A100163 A183066 * A126413 A044358 A044739` `Adjacent sequences: A124951 A124952 A124953 * A124955 A124956 A124957`
	KEYWORD	`nonn,base`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net), Dec 28 2006`

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Last modified February 16 20:23 EST 2012. Contains 205962 sequences.