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A007483
Number of subsequences of [ 1,...,2n+1 ] in which each odd number has an even neighbor.
(Formerly M3875)
+0
8
1, 5, 17, 61, 217, 773, 2753, 9805, 34921, 124373, 442961, 1577629, 5618809, 20011685, 71272673, 253841389, 904069513, 3219891317, 11467812977, 40843221565, 145465290649, 518082315077, 1845177526529, 6571697209741
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Maintained by
N. J. A. Sloane
(
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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