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A124864
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Number of base 13 circular n-digit numbers with adjacent digits differing by 2 or less.
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2
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1, 13, 59, 217, 927, 4003, 17735, 79603, 361207, 1652347, 7608009, 35214643, 163703859, 763777807, 3574392251, 16771283857, 78867271271, 371585266531, 1753627967177, 8287756490659, 39216985201477, 185770958749075
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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)+A005191(n+1) for base>=2.int(n/2)+1.
See A285280 for confirmation of linear recurrence and code to produce sequence. - Ray Chandler, Aug 12 2023.
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LINKS
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Index entries for linear recurrences with constant coefficients, signature (13, -55, 55, 159, -285, -155, 365, 60, -174, -9, 27).
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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]`-$[(i+1)mod N]`>2)+($[(i+1)mod N]`-$[i]`>2))
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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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