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A059457
Numerator of sum(k=0,n,(-1)^k/(3k+1)).
+0
2
1, 3, 25, 111, 1583, 5877, 118943, 1239213, 6500369, 6228669, 200696339, 3293919963, 125884243831, 122175729021, 5401896940303, 121054306890369, 868338554787383, 848589287072283, 867261322002923, 24637097377492167
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Maintained by
N. J. A. Sloane
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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.
AT&T Labs Research
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