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2, 15, 30, 32, 34, 35, 36, 38, 40, 42, 44, 46, 48, 55, 75, 95, 115, 135, 155, 175, 198, 228, 251, 254, 257, 258, 260, 263, 266, 269, 272, 275, 278, 288, 318, 348, 378, 408, 438, 468, 490, 493, 496, 498, 499, 502, 505, 508, 511, 514
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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COMMENTS
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LINKS
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PROG
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(Haskell)
import Data.List (elemIndices)
a031289 n = a031289_list !! (n-1)
a031289_list = map (+ 1) $ elemIndices 2 a007376_list
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CROSSREFS
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KEYWORD
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nonn,less,base
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AUTHOR
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STATUS
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approved
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