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A069212 a(n)=sum(k=1,n,3^omega(k)). +0
1
1, 4, 7, 10, 13, 22, 25, 28, 31, 40, 43, 52, 55, 64, 73, 76, 79, 88, 91, 100, 109, 118, 121, 130, 133, 142, 145, 154, 157, 184, 187, 190, 199, 208, 217, 226, 229, 238, 247, 256, 259, 286, 289, 298, 307, 316, 319, 328, 331, 340, 349, 358, 361, 370, 379, 388, 397 (list; graph; listen)
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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.


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