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A126409 Number of base 22 n-digit numbers with adjacent digits differing by two or less. 3
1, 22, 104, 500, 2418, 11736, 57098, 278274, 1357980, 6633780, 32433110, 158676010, 776746680, 3804116478, 18638153276, 91348350296, 447842953212, 2196139279248, 10771787471680, 52844083573174, 259283266049208 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

[Empirical] a(base,n)=a(base-1,n)+5^(n-1) for base>=2n-1; a(base,n)=a(base-1,n)+5^(n-1)-2 when base=2n-2

LINKS

Table of n, a(n) for n=0..20.

PROG

(S/R) stvar $[N]:(0..M-1) init $[]:=0 asgn $[]->{*} kill +[i in 0..N-2](($[i]`-$[i+1]`>2)+($[i+1]`-$[i]`>2))

CROSSREFS

Cf. Base 22 differing by one or less A126376.

Sequence in context: A066450 A231225 A124950 * A233299 A174074 A261534

Adjacent sequences:  A126406 A126407 A126408 * A126410 A126411 A126412

KEYWORD

nonn,base

AUTHOR

R. H. Hardin, Dec 28 2006

STATUS

approved

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Last modified July 2 15:47 EDT 2020. Contains 335403 sequences. (Running on oeis4.)