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Search: id:A126543
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| A126543 |
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Number of base 22 n-digit numbers with adjacent digits differing by five or less. |
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+0
1
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| 1, 22, 212, 2112, 21262, 215204, 2183942, 22191818, 225641380, 2294976992, 23345496862, 237497850214, 2416193594602, 24581666342894, 250088998066402, 2544366359893456, 25886037501605214, 263361284829149912
(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)+11^(n-1) for base>=5n-4; a(base,n)=a(base-1,n)+11^(n-1)-2 when base=5n-5
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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]`-$[i+1]`>5)+($[i+1]`-$[i]`>5))
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CROSSREFS
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Cf. Base 22 differing by four or less A126517, three or less A126490, two or less A126409, one or less A126376.
Sequence in context: A010828 A022714 A125385 this_sequence A008453 A066573 A121087
Adjacent sequences: A126540 A126541 A126542 this_sequence A126544 A126545 A126546
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KEYWORD
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nonn
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AUTHOR
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Ron Hardin (rhhardin(AT)att.net), Dec 28 2006
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