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A108220
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Numbers n such that concatenating n and the sum of factorials of the digits of n produces a square.
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0
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3, 102, 122, 202, 1102, 15031, 244134, 244233, 434412, 495918, 1267396, 1300035, 1324340, 1635150, 3442657, 3878374, 5064314, 6175125, 6181308, 10320734, 10560355, 10586434, 10730603, 10804230, 11544642, 16224135, 17523855
(list; graph; refs; listen; history; internal format)
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