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A188917
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Where powers of 2 occur in the union of squares and powers of 2.
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4
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1, 2, 3, 4, 6, 8, 11, 15, 20, 27, 37, 51, 70, 97, 135, 189, 264, 371, 521, 734, 1034, 1459, 2059, 2908, 4108, 5805, 8205, 11599, 16398, 23185, 32783, 46356, 65552, 92698, 131089, 185381, 262162, 370746, 524307, 741475, 1048596, 1482931, 2097173, 2965842, 4194326, 5931664, 8388631
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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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FORMULA
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a(n) = floor((n+1)/2) + floor(2^(n/2)). - Robert Israel, Jun 13 2019
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MAPLE
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seq(floor((n+1)/2) + floor(2^(n/2)), n=0..100); # Robert Israel, Jun 13 2019
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PROG
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(Haskell)
a188917 n = a188917_list !! n
a188917_list = filter ((== 1) . a209229. a188915) [0..]
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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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