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Search: id:A125445
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| A125445 |
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Number of base 10 circular n-digit numbers with adjacent digits differing by 8 or less. |
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+0
1
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| 1, 10, 98, 946, 9282, 91090, 894050, 8775154, 86128770, 845360146, 8297271458, 81438324274, 799323090114, 7845414405202, 77003314367714, 755793144551026, 7418164815900930, 72809828499516562, 714633775022856482
(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)+F(8) for base>=8.int(n/2)+1 and F(d) is the largest coefficient in (1+x+...+x^(2d))^n
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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]`-$[(i+1)mod N]`>8)+($[(i+1)mod N]`-$[i]`>8))
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CROSSREFS
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Sequence in context: A125946 A158513 A125880 this_sequence A163446 A007137 A135927
Adjacent sequences: A125442 A125443 A125444 this_sequence A125446 A125447 A125448
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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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