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A126519
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Number of base 24 n-digit numbers with adjacent digits differing by four or less.
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1
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1, 24, 196, 1644, 13916, 118416, 1010892, 8648028, 74086762, 635291688, 5451042614, 46791744232, 401773647392, 3450448765596, 29636332554924, 254571572184234, 2186853928177032, 18786503501683672, 161392382824498244
(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)+9^(n-1) for base>=4n-3; a(base,n)=a(base-1,n)+9^(n-1)-2 when base=4n-4
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LINKS
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Table of n, a(n) for n=0..18.
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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]`-$[i+1]`>4)+($[i+1]`-$[i]`>4))
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CROSSREFS
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Cf. Base 24 differing by three or less A126492, two or less A126411, one or less A126378.
Sequence in context: A123197 A211151 A125361 * A198396 A225296 A048355
Adjacent sequences: A126516 A126517 A126518 * A126520 A126521 A126522
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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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