**a(n) = a(n-2) + c(n-1) for n >= 3, a( ) increasing, given a(1)=1, a(2)=2; where c( ) is complement of a( ).**

*1, 2, 5, 8, 12, 17, 22, 28, 35, 42, 50, 58, 68, 77, 88, 98, 111, 122, 136, 148, 163, 177*

*1 seqfan posts*

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

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