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A130221
Number of partitions of n-set in which number of blocks of size 2k is odd (or zero) for every k.
+0
1
1, 1, 2, 5, 12, 37, 158, 667, 2740, 13461, 74710, 412095, 2406880, 15450541, 103187698, 715323395, 5236160612, 40014337437, 318488475658, 2637143123027, 22603231117364, 201268520010153, 1855401760331982, 17624602999352535
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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 00:58 EST 2009. Contains 171054 sequences.
AT&T Labs Research
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