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A113989
Column 0 of triangle
A113988
, which is the matrix square of
A113983
: a(n) = [
A113983
^2](n,0).
+0
12
1, 2, 4, 8, 18, 46, 136, 464, 1818, 8122, 41076, 233472, 1480946, 10412590, 80634432, 683674832, 6312152354, 63144706754, 681317547508, 7896054343496, 97919789763074, 1294863406981790, 18200820837825480, 271147632138373600
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Maintained by
N. J. A. Sloane
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njas@research.att.com
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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.
AT&T Labs Research
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