0,1
Tersum m + n: write m and n in base 3 and add mod 3 with no carries, e.g. 5 + 8 = "21" + "22" = "10" = 1.
Sequence in context: A096166 A078548 A095777 this_sequence A020723 A107043 A023392
Adjacent sequences: A004495 A004496 A004497 this_sequence A004499 A004500 A004501
nonn
N. J. A. Sloane (njas(AT)research.att.com).
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