**a(n) = 2(a(n-2) - a(n-1)) + a(n-3) where a(0)=-3, a(1)=11 & a(2)=-30.**

*3, 11, 30, 79, 207, 542, 1419, 3715, 9726, 25463, 66663, 174526, 456915*

*1 seqfan posts*

Index of A-numbers in seqfan: by ascending order by month by frequency by keyword

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