Tridigital Triangular Numbers

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Triangular numbers with digits in {0, 2, 7} (up to 10³²)

A218398 = n	A218397 = T(n)
374184	70007020020
7385400	27272070272700
203569507673559	20720272227227700077007700020

Next term is T(6663335616682084400) = 22200020770272007007202277772702722200, found by Max Alekseyev.

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