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A026306
a(n) = T(2n,n+1), where T is the array in
A026300
.
+0
1
0, 2, 12, 69, 392, 2235, 12804, 73710, 426192, 2473704, 14405800, 84137130, 492652824, 2891110235, 16999928820, 100136858625, 590778928800, 3490370847876, 20647839813048, 122287764072938, 725023671281520, 4302720916638417
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Maintained by
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Last modified December 13 23:45 EST 2009. Contains 170824 sequences.
AT&T Labs Research
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