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 A142882 First trisection of A120070. 0
 3, 15, 24, 9, 27, 48, 33, 63, 48, 15, 72, 45, 99, 84, 51, 120, 105, 72, 21, 135, 108, 63, 168, 153, 120, 69, 195, 180, 147, 96, 27, 216, 189, 144, 81, 255, 240, 207, 156, 87, 288, 273, 240, 189, 120, 33, 315, 288, 243, 180, 99, 360, 345, 312, 261, 192, 105, 399, 384, 351, 300, 231, 144, 39 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS All entries are multiples of 3. LINKS EXAMPLE If we keep the association with lines in A120070, this triangle here that keeps only each third element starts: 3; ./.; 15; 24,9; 27; 48,33; 63,48,15; 72,45; 99,84,51; 120,105,72,21; 135,108,63; 168,153,120,69; 195,180,147,96,27; 216,189,144,81; 255,240,207,156,87; 288,273,240,189,120,33; 315,288,243,180,99; 360,345,312,261,192,105; 399,384,351,300,231,144,39; CROSSREFS Sequence in context: A225060 A060649 A009210 * A161467 A101133 A061386 Adjacent sequences:  A142879 A142880 A142881 * A142883 A142884 A142885 KEYWORD nonn,tabf AUTHOR Paul Curtz, Sep 28 2008 STATUS approved

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Last modified December 12 17:59 EST 2019. Contains 329960 sequences. (Running on oeis4.)