1, 2, 16, 272, 7936, __, ____, 1903757312, 209865342976, 29088885112832, 4951498053124096, 1015423886506852352, 246921480190207983616, 70251601603943959887872, 23119184187809597841473536 A000182

the sum of these two equals with…

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