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A026555
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a(n)=T(n,n-2), T given by A026552. Also a(n) = number of integer strings s(0),...,s(n) counted by T, such that s(n)=2.
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0
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1, 2, 7, 13, 40, 76, 226, 434, 1279, 2470, 7267, 14085, 41462, 80584, 237484, 462620, 1365014, 2664276, 7870226, 15387670, 45501743, 89097932, 263707094, 517058502, 1531614109, 3006637946, 8912678569, 17514547015, 51952990090
(list; graph; refs; listen; history; internal format)
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