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Complement of A055235 (sums of two powers of 3)
Table of n, a(n) for n=1..66.
a(2)=3 because 3 cannot be expressed as the sum of two powers of 3
Cf. A055235, A072823.
Sequence in context: A183868 A299542 A144724 * A060462 A072668 A249433
Adjacent sequences: A196987 A196988 A196989 * A196991 A196992 A196993
Jeremy Gardiner, Oct 08 2011