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A058424 as a simple table

na(n)
14
22244004
342224004
4424442404
522200404004
64024044024004
740244204444224
82242202244202404
940024004400240004
1040402004202240004
11400024000440002400004
122202400402420402044004
134000024000044000024000004
1440000024000004400000240000004
152440040242204024220420044444224

[4,2244004,42224004,424442404,22200404004,
 4024044024004,40244204444224,2242202244202404,
 40024004400240004,40402004202240004,
 400024000440002400004,2202400402420402044004,
 4000024000044000024000004,
 40000024000004400000240000004,
 2440040242204024220420044444224]