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A125479
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Number of base 22 circular n-digit numbers with adjacent digits differing by 9 or less.
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0
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1, 22, 328, 4252, 62788, 946972, 14517082, 224253702, 3478257820, 54059966464, 841094239878, 13093151507282, 203873447467294, 3174946219127354, 49447242369205904, 770128096546157332, 11994759635204143948
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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(9) for base>=9.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]`-$[(i+1)mod N]`>9)+($[(i+1)mod N]`-$[i]`>9))
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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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