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A008805
Triangular numbers repeated.
+0
16
1, 1, 3, 3, 6, 6, 10, 10, 15, 15, 21, 21, 28, 28, 36, 36, 45, 45, 55, 55, 66, 66, 78, 78, 91, 91, 105, 105, 120, 120, 136, 136, 153, 153, 171, 171, 190, 190, 210, 210, 231, 231, 253, 253, 276, 276, 300, 300, 325
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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 20 16:54 EST 2009. Contains 171081 sequences.
AT&T Labs Research
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