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A027561
Number of 4-unbalanced strings of length n (=2^n-
A027559
[ n ]).
+0
1
0, 0, 0, 0, 0, 2, 6, 22, 56, 152, 356, 858, 1914, 4334, 9372, 20440, 43280, 92114, 192182, 402246, 830328, 1717496, 3517668, 7214218, 14689994, 29938526, 60697148, 123127224, 248807472, 502963778, 1013829414, 2044098166
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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 3 22:15 EST 2009. Contains 170310 sequences.
AT&T Labs Research
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