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Search: id:A124701
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| A124701 |
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Number of base 8 circular n-digit numbers with adjacent digits differing by 1 or less. |
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+0
1
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| 1, 8, 22, 50, 130, 338, 904, 2444, 6682, 18410, 51052, 142304, 398380, 1119308, 3154558, 8914010, 25246282, 71644298, 203665054, 579841286, 1653025900, 4718011460, 13479908926, 38548802570, 110327691316, 315985475588
(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)+A002426(n+1) for base>=1.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]`-$[(i+1)mod N]`>1)+($[(i+1)mod N]`-$[i]`>1))
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CROSSREFS
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Sequence in context: A145067 A112684 A048489 this_sequence A002968 A058404 A126362
Adjacent sequences: A124698 A124699 A124700 this_sequence A124702 A124703 A124704
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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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