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A124950 Number of base 22 circular n-digit numbers with adjacent digits differing by 2 or less. 0
1, 22, 104, 388, 1692, 7432, 33494, 152818, 704692, 3275272, 15320514, 72038098, 340204434, 1612559698, 7667644032, 36559128748, 174730634628, 836872304392, 4015726470338, 19301794774522, 92915156135782, 447886264698862 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

[Empirical] a(base,n)=a(base-1,n)+A005191(n+1) for base>=2.int(n/2)+1

LINKS

Table of n, a(n) for n=0..21.

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: A060382 A066450 A231225 * A126409 A233299 A174074

Adjacent sequences:  A124947 A124948 A124949 * A124951 A124952 A124953

KEYWORD

nonn,base

AUTHOR

R. H. Hardin, Dec 28 2006

STATUS

approved

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Last modified August 10 14:50 EDT 2020. Contains 336381 sequences. (Running on oeis4.)