**Triangular numbers, T(m), that are four-thirds of another triangular number; T(m) such that 3*T(m) = 4*T(k) for some k.**

*0, 28, 5460, 1059240, 205487128, 39863443620, 7733302575180*

*1 seqfan posts*

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

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