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Search: id:A126544
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| A126544 |
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Number of base 23 n-digit numbers with adjacent digits differing by five or less. |
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+0
1
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| 1, 23, 223, 2233, 22593, 229845, 2344951, 23959555, 244996403, 2506196601, 25642541441, 262394013219, 2685165779179, 27478998106253, 281214182348803, 2877908167110333, 29452244633456589, 301412164854186481
(list; graph; listen)
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OFFSET
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0,2
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COMMENT
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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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PROGRAM
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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 23 differing by four or less A126518, three or less A126491, two or less A126410, one or less A126377.
Sequence in context: A038514 A125386 A091628 this_sequence A142490 A051819 A144248
Adjacent sequences: A126541 A126542 A126543 this_sequence A126545 A126546 A126547
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KEYWORD
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nonn
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AUTHOR
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Ron Hardin (rhhardin(AT)att.net), Dec 28 2006
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