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A118259 Numbers of strongly carefree couples (a,b) with a,b<=n. +0
4
1, 3, 7, 7, 13, 17, 27, 27, 27, 33, 47, 47, 63, 73, 85, 85, 107, 107, 131, 131, 147, 165, 195, 195, 195, 215, 215, 215, 249, 265, 303, 303, 329, 355, 385, 385, 431, 461, 495, 495, 547, 569, 625, 625, 625, 661, 721, 721, 721, 721, 763, 763, 827, 827, 877, 877 (list; graph; listen)
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Last modified December 17 19:39 EST 2009. Contains 170821 sequences.


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