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Search: id:A125399
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| A125399 |
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Number of base 11 circular n-digit numbers with adjacent digits differing by 6 or less. |
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+0
1
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| 1, 11, 101, 851, 7861, 73361, 687911, 6458645, 60663405, 569855705, 5353272231, 50289664667, 472432405351, 4438140914777, 41692951349661, 391673541192251, 3679474891298093, 34565867184632063, 324720024734460965
(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(6) for base>=6.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]`-$[(i+1)mod N]`>6)+($[(i+1)mod N]`-$[i]`>6))
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CROSSREFS
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Sequence in context: A057532 A001603 A045624 this_sequence A037550 A138894 A122105
Adjacent sequences: A125396 A125397 A125398 this_sequence A125400 A125401 A125402
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KEYWORD
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nonn
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AUTHOR
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Ron Hardin (rhh(AT)cadence.com), Dec 28 2006
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