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A278546
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Even numbers that cannot be expressed as a sum of 3 or fewer terms of A035928.
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0
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8, 18, 28, 130, 134, 138, 148, 158, 176, 318, 530, 538, 548, 576, 644, 1300, 2170, 2202, 2212, 2228, 2230, 2248, 8706, 8938, 8948, 34970, 35082
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OFFSET
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1,1
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COMMENTS
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This is conjectured to be the complete list. There are no other examples smaller than 16773120.
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LINKS
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MATHEMATICA
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nn = 10^5; Complement[Range[2, nn, 2], Union@ Map[Total, Rest@ Tuples[{0}~Join~#, 3]] &@ Select[Range@ nn, Function[k, Reverse[# /. {1 -> 0, 0 -> 1}] == # &@ IntegerDigits[k, 2]]]] (* Michael De Vlieger, Nov 23 2016, after Harvey P. Dale at A035928 *)
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CROSSREFS
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KEYWORD
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nonn,more
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AUTHOR
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STATUS
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approved
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