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%I #12 Mar 16 2022 20:13:38
%S 42,4422,46440,464442,44642442,144444342,40447444340,2344449414440,
%T 42794944444440,443448440044440,24442434644444460,455758444444444440,
%U 34444442714441644442,44441704844441444442,14444904404444444646450,344407444483444494444942,1244444414842444444444506
%N Smallest oblong (promic) number containing exactly n 4's.
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/PronicNumber.html">Pronic Number</a>
%Y Cf. A048537, A002378.
%Y Cf. A048530, A048532, A048534, A048536, A048540, A048542, A048544, A048546, A048548.
%K nonn,base
%O 1,1
%A _Patrick De Geest_, May 15 1999
%E a(13)-a(17) from _Giovanni Resta_, Oct 09 2019
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