DescriptionOEISbanner.png English: The official logo of the On-Line Encyclopedia of Integer Sequences Date 14 January 2014 Source https://oeis.org/Luschny4.png
wrniitA
Um tke mesCttnSu
that (he two wen not h^vlna tV'blr dukt."
dd pngUlit Uoflelf, and 'U<aiaa>t leem cosUtt
toetqaarethlng to adocenneato pUaoktotwaao