A004512 Tersum n + 23.

23, 21, 22, 26, 24, 25, 20, 18, 19, 5, 3, 4, 8, 6, 7, 2, 0, 1, 14, 12, 13, 17, 15, 16, 11, 9, 10, 50, 48, 49, 53, 51, 52, 47, 45, 46, 32, 30, 31, 35, 33, 34, 29, 27, 28, 41, 39, 40, 44, 42, 43, 38, 36, 37, 77, 75, 76, 80

Offset

0,1

Links

Table of n, a(n) for n=0..57.

Formula

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.

Crossrefs

Sequence in context: A085450 A077146 A077576 * A214342 A261308 A022979

Adjacent sequences: A004509 A004510 A004511 * A004513 A004514 A004515

Keyword

nonn

Author

N. J. A. Sloane

Status

approved