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Search: id:A124999
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| A124999 |
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Number of base 5 circular n-digit numbers with adjacent digits differing by 3 or less. |
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+0
1
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| 1, 5, 23, 101, 467, 2165, 10055, 46709, 216995, 1008101, 4683383, 21757829, 101081459, 469599317, 2181641639, 10135364501, 47086382915, 218751625157, 1016265649367, 4721317472933, 21934066839827, 101900219778101
(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)+A025012(n+1) for base>=3.int(n/2)+1
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PROGRAM
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(S/R) stvar $[N]:(0..M-1) init $[]:=0 asgn $[]->{*} kill +[i in 0..N-1](($[i]`-$[(i+1)mod N]`>3)+($[(i+1)mod N]`-$[i]`>3))
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CROSSREFS
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Sequence in context: A034958 A085350 A113443 this_sequence A120902 A054441 A102285
Adjacent sequences: A124996 A124997 A124998 this_sequence A125000 A125001 A125002
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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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