References to A164923

Those positive integers that do not occur as a sum of any two distinct terms of sequence A164921.
4, 8, 9, 10, 14, 15, 20, 21, 26, 27, 32, 33, 35, 36, 44, 45, 50, 51, 56, 57, 62, 63, 65, 74

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