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A125375
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Number of base 12 circular n-digit numbers with adjacent digits differing by 5 or less.
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0
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1, 12, 102, 762, 6442, 55562, 486102, 4278734, 37774538, 333954114, 2954331502, 26143583918, 231384164326, 2048007248286, 18127716503740, 160457920059992, 1420307031097690, 12572010392961098, 111282760217915184
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OFFSET
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0,2
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COMMENTS
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[Empirical] a(base,n)=a(base-1,n)+F(5) for base>=5.int(n/2)+1 and F(d) is the largest coefficient in (1+x+...+x^(2d))^n.
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LINKS
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PROG
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(S/R) stvar $[N]:(0..M-1) init $[]:=0 asgn $[]->{*} kill +[i in 0..N-1](($[i]`-$[(i+1)mod N]`>5)+($[(i+1)mod N]`-$[i]`>5))
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CROSSREFS
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KEYWORD
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nonn,base
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AUTHOR
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STATUS
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approved
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