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A126524 Number of base 29 n-digit numbers with adjacent digits differing by four or less. 1
1, 29, 241, 2049, 17561, 151221, 1306137, 11305233, 98001277, 850500103, 7387286529, 64205640387, 558304969573, 4856561584969, 42257794378689, 367769781530795, 3201211717021261, 27867955430533517, 242624946286670611 (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 29 differing by three or less A126497, two or less A126416, one or less A126383.

Sequence in context: A177419 A142559 A125366 * A334690 A027939 A146127

Adjacent sequences:  A126521 A126522 A126523 * A126525 A126526 A126527

KEYWORD

nonn,base

AUTHOR

R. H. Hardin, Dec 28 2006

STATUS

approved

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Last modified August 13 19:30 EDT 2020. Contains 336451 sequences. (Running on oeis4.)