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A081868
Numbers n such that sum(k=1,n,C(2k,k) mod 3) is even.
+0
1
1, 2, 3, 10, 11, 28, 29, 36, 37, 38, 39, 82, 83, 90, 91, 92, 93, 108, 109, 110, 111, 118, 119, 244, 245, 252, 253, 254, 255, 270, 271, 272, 273, 280, 281, 324, 325, 326, 327, 334, 335, 352, 353, 360, 361, 362, 363
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Maintained by
N. J. A. Sloane
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njas@research.att.com
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Last modified December 5 08:19 EST 2009. Contains 170347 sequences.
AT&T Labs Research
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