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A048917
Indices of hexagonal numbers which are also 9-gonal.
+0
3
1, 13, 51625, 822757, 3330519121, 53079328957, 214865110504441, 3424359827493013, 13861807735752971425, 220919149857804895597, 894280664049502087991881, 14252378030502065207035717
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified November 25 08:46 EST 2009. Contains 167481 sequences.
AT&T Labs Research
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