A124955 - OEIS

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A124955

Number of base 27 circular n-digit numbers with adjacent digits differing by 2 or less.

1, 27, 129, 483, 2117, 9337, 42249, 193493, 895517, 4176897, 19605239, 92495573, 438260309, 2084105193, 9941672807, 47552376493, 227988078573, 1095365516417, 5272454219583, 25420784798597, 122748340134507 (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: A044740 A026917 A048615 * A126414 A183427 A066414` `Adjacent sequences: A124952 A124953 A124954 * A124956 A124957 A124958`
	KEYWORD	`nonn,base`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net), Dec 28 2006`

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Last modified February 16 21:51 EST 2012. Contains 205978 sequences.