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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

Table of n, a(n) for n=1..64.

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.)