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A168060 Denominators of ((n+2)/(n+1)/n) (sorted with no repeats). 1
2, 3, 10, 12, 21, 30, 36, 55, 56, 78, 90, 105, 132, 136, 171, 182, 210, 240, 253, 300, 306, 351, 380, 406, 462, 465, 528, 552, 595, 650, 666, 741, 756, 820, 870, 903, 990, 992, 1081, 1122, 1176, 1260, 1275, 1378, 1406, 1485, 1560, 1596, 1711, 1722, 1830, 1892 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Union of A002939 and A014105. - Robert Israel, May 05 2014

LINKS

G. C. Greubel, Table of n, a(n) for n = 1..1000

MATHEMATICA

Union@Table[Denominator[(n+2)/(n+1)/n], {n, 80}]

CROSSREFS

Cf. A026741, A168059.

Sequence in context: A022427 A061868 A004679 * A306076 A069124 A218028

Adjacent sequences:  A168057 A168058 A168059 * A168061 A168062 A168063

KEYWORD

nonn

AUTHOR

Vladimir Joseph Stephan Orlovsky, Nov 17 2009

STATUS

approved

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Last modified November 26 16:51 EST 2020. Contains 338641 sequences. (Running on oeis4.)