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A026150
a(0) = a(1) = 1; a(n+2) = 2*a(n+1) + 2*a(n).
+0
30
1, 1, 4, 10, 28, 76, 208, 568, 1552, 4240, 11584, 31648, 86464, 236224, 645376, 1763200, 4817152, 13160704, 35955712, 98232832, 268377088, 733219840, 2003193856, 5472827392, 14952042496, 40849739776
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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 18 21:37 EST 2009. Contains 171024 sequences.
AT&T Labs Research
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