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A126546
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Number of base 25 n-digit numbers with adjacent digits differing by five or less.
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0
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1, 25, 245, 2475, 25255, 259127, 2667039, 27499769, 283843569, 2931488329, 30286288971, 312960372023, 3234309867213, 33427353913483, 345492390255623, 3570953641573985, 36909251330677927, 381495392831876277
(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 25 differing by four or less A126520, three or less A126493, two or less A126412, one or less A126379.
Sequence in context: A108178 A107943 A125388 * A023073 A022685 A042208
Adjacent sequences: A126543 A126544 A126545 * A126547 A126548 A126549
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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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