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A256283
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Smallest m such that A257905(m) = n.
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3
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1, 2, 4, 3, 7, 5, 9, 11, 14, 8, 13, 6, 17, 10, 19, 12, 21, 15, 23, 25, 27, 29, 31, 33, 38, 18, 36, 43, 41, 20, 35, 45, 47, 22, 51, 16, 53, 24, 49, 26, 40, 28, 50, 30, 57, 32, 59, 34, 55, 39, 65, 61, 63, 37, 67, 44, 71, 42, 75, 69, 77, 73, 79, 46, 81, 48, 85
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,2
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COMMENTS
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LINKS
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MATHEMATICA
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{a, f} = {{1}, {0}}; Do[tmp = {#, # - Last[a]} &[Min[Complement[#, Intersection[a, #]]&[Last[a] + Complement[#, Intersection[f, #]] &[Range[2 - Last[a], -1]]]]];
If[! IntegerQ[tmp[[1]]], tmp = {Last[a] + #, #} &[NestWhile[# + 1 &, 1, ! (! MemberQ[f, #] && ! MemberQ[a, Last[a] - #]) &]]];
AppendTo[a, tmp[[1]]]; AppendTo[f, tmp[[2]]], {1000}]; a;
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PROG
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(Haskell)
import Data.List (elemIndex); import Data.Maybe (fromJust)
a256283 = (+ 1) . fromJust . (`elemIndex` a257905_list)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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