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A178389
Multiples of 3 in A175461.
0
21, 69, 93, 141, 213, 237, 309, 381, 453, 501, 573, 597, 669, 717, 789, 813, 933, 1077, 1101, 1149, 1293, 1317, 1389, 1437, 1461, 1509, 1797, 1821, 1893, 1941, 2157, 2181, 2229, 2253, 2469, 2517, 2589, 2661, 2733, 2757, 2901, 2949, 2973, 3093, 3117, 3189
OFFSET
1,1
FORMULA
a(n) = 3*A007522(n). [From R. J. Mathar, May 31 2010]
CROSSREFS
Cf. A175461.
Sequence in context: A038471 A224072 A020150 * A297304 A155492 A201066
KEYWORD
nonn
AUTHOR
Zak Seidov, May 27 2010
STATUS
approved