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A099425
Expansion of (1+x^2)/(1-2*x-x^2).
+0
5
1, 2, 6, 14, 34, 82, 198, 478, 1154, 2786, 6726, 16238, 39202, 94642, 228486, 551614, 1331714, 3215042, 7761798, 18738638, 45239074, 109216786, 263672646, 636562078, 1536796802, 3710155682, 8957108166, 21624372014, 52205852194
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Maintained by
N. J. A. Sloane
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Last modified December 11 12:57 EST 2009. Contains 170656 sequences.
AT&T Labs Research
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