**a(n) = 6*a(n-1)-2*a(n-2) for n>1; a(1)=1, a(2)=6.**

*1, 6, 34, 192, 1084, 6120, 34552, 195072, 1101328, 6217824, 35104288, 198190080*

*3 seqfan posts*

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

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