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A128012
a(n) = 3*A001399(n).
0
3, 3, 6, 9, 12, 15, 21, 24, 30, 36, 42, 48, 57, 63, 72, 81, 90, 99, 111, 120, 132, 144, 156, 168, 183, 195, 210, 225, 240, 255, 273, 288, 306, 324, 342, 360, 381, 399, 420, 441, 462, 483, 507, 528, 552, 576, 600, 624, 651, 675, 702, 729, 756, 783, 813, 840, 870
OFFSET
0,1
CROSSREFS
Cf. A001399.
Sequence in context: A093445 A098358 A136289 * A289143 A323451 A280240
KEYWORD
nonn,easy,less
AUTHOR
Thomas Wieder, Feb 11 2007
EXTENSIONS
More terms from Robert G. Wilson v, Feb 11 2007
Offset corrected by Alois P. Heinz, Sep 02 2020
STATUS
approved