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A126548
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Number of base 27 n-digit numbers with adjacent digits differing by five or less.
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0
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1, 27, 267, 2717, 27917, 288409, 2989141, 31042303, 322776905, 3358829107, 34968972551, 364173230843, 3793272171773, 39515744665327, 411677827262455, 4289079592113919, 44687156668215307, 465595502937636417
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,2
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COMMENTS
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[Empirical] a(base,n)=a(base-1,n)+11^(n-1) for base>=5n-4; a(base,n)=a(base-1,n)+11^(n-1)-2 when base=5n-5
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LINKS
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Table of n, a(n) for n=0..17.
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PROG
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(S/R) stvar $[N]:(0..M-1) init $[]:=0 asgn $[]->{*} kill +[i in 0..N-2](($[i]`-$[i+1]`>5)+($[i+1]`-$[i]`>5))
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CROSSREFS
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Cf. Base 27 differing by four or less A126522, three or less A126495, two or less A126414, one or less A126381.
Sequence in context: A132652 A349507 A125390 * A108670 A136925 A181323
Adjacent sequences: A126545 A126546 A126547 * A126549 A126550 A126551
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KEYWORD
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nonn,base
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AUTHOR
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R. H. Hardin, Dec 28 2006
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STATUS
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approved
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