A048540 Smallest oblong (promic) number containing exactly n 5's.

56, 552, 5550, 5055752, 5255556, 552555542, 2555555256, 551555015556, 5555555065506, 515605555595550, 5558455555057550, 495553555055055552, 555055556595557556, 15975555555558555452, 5525459555405553555552, 59555925551555575555056, 255555555455525595515520

Offset: 1

Author

Patrick De Geest, May 15 1999

Keywords

• nonn
• base

Links

• Eric Weisstein's World of Mathematics, Pronic Number

Crossrefs

Cf. A048539, A002378.

Cf. A048530, A048532, A048534, A048536, A048538, A048542, A048544, A048546, A048548.

Extensions

a(14)-a(17) from Giovanni Resta, Oct 09 2019