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.
Adjacent sequences: A004496 A004497 A004498 this_sequence A004500 A004501 A004502
Sequence in context: A105743 A105835 A004451 this_sequence A020509 A103181 A100813
nonn
njas
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