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A126527 Number of base 32 n-digit numbers with adjacent digits differing by four or less. 1
1, 32, 268, 2292, 19748, 170904, 1483284, 12899556, 112350184, 979640156, 8549531716, 74665238648, 652426700120, 5703387501520, 49875030912772, 436266613941484, 3816936851122500, 33400491065984904, 292314430831005104 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

[Empirical] a(base,n)=a(base-1,n)+9^(n-1) for base>=4n-3; a(base,n)=a(base-1,n)+9^(n-1)-2 when base=4n-4

LINKS

Table of n, a(n) for n=0..18.

PROG

(S/R) stvar $[N]:(0..M-1) init $[]:=0 asgn $[]->{*} kill +[i in 0..N-2](($[i]`-$[i+1]`>4)+($[i+1]`-$[i]`>4))

CROSSREFS

Cf. Base 32 differing by three or less A126500, two or less A126419, one or less A126386.

Sequence in context: A189651 A145711 A125369 * A265842 A248884 A223904

Adjacent sequences:  A126524 A126525 A126526 * A126528 A126529 A126530

KEYWORD

nonn,base

AUTHOR

R. H. Hardin, Dec 28 2006

STATUS

approved

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Last modified January 28 05:01 EST 2021. Contains 340490 sequences. (Running on oeis4.)