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A001075
a(0) = 1, a(1) = 2, a(n) = 4a(n-1) - a(n-2).
(Formerly M1769 N0700)
+0
41
1, 2, 7, 26, 97, 362, 1351, 5042, 18817, 70226, 262087, 978122, 3650401, 13623482, 50843527, 189750626, 708158977, 2642885282, 9863382151, 36810643322, 137379191137, 512706121226, 1913445293767, 7141075053842, 26650854921601
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified November 25 08:46 EST 2009. Contains 167481 sequences.
AT&T Labs Research
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