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Search: id:A126482
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| A126482 |
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Number of base 14 n-digit numbers with adjacent digits differing by three or less. |
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+0
3
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| 1, 14, 86, 546, 3502, 22582, 146000, 945166, 6122674, 39674426, 257126690, 1666543060, 10801947152, 70015705526, 453829551820, 2941656640950, 19067428223036, 123592671411170, 801112565036276, 5192714887319794
(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)+7^(n-1) for base>=3n-2; a(base,n)=a(base-1,n)+7^(n-1)-2 when base=3n-3
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PROGRAM
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(S/R) stvar $[N]:(0..M-1) init $[]:=0 asgn $[]->{*} kill +[i in 0..N-2](($[i]`-$[i+1]`>3)+($[i+1]`-$[i]`>3))
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CROSSREFS
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Cf. Base 14 differing by two or less A126401, one or less A126368.
Sequence in context: A025607 A059600 A125324 this_sequence A116343 A034544 A077538
Adjacent sequences: A126479 A126480 A126481 this_sequence A126483 A126484 A126485
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KEYWORD
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nonn,base
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AUTHOR
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Ron Hardin (rhhardin(AT)att.net), Dec 27 2006
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