This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A098736 #22 Aug 06 2020 01:05:10 %S A098736 0,1,4,9,16,25,36,49,64,81,0,11,24,39,56,75,96,119,144,171,0,42,88, %T A098736 138,192,250,312,378,448,522,0,93,192,297,408,525,648,777,912,1053,0, %U A098736 164,336,516,704,900,1104,1316,1536,1764,0,255,520,795,1080,1375,1680,1995 %N A098736 a(n) = product of n and all its digits. %H A098736 Vincenzo Librandi, <a href="/A098736/b098736.txt">Table of n, a(n) for n = 0..1000</a> %H A098736 <a href="/index/Coi#Colombian">Index entries for Colombian or self numbers and related sequences</a> %F A098736 If n=abcd (say) in decimal, then a(n) = abcd * a * b * c * d. %F A098736 a(n) = n*A007954(n). - _R. J. Mathar_, Sep 27 2013 %e A098736 a(15) = 15*1*5=75 %p A098736 with transforms; [seq(n*digprod(n), n=0..200)]; # _N. J. A. Sloane_, Oct 12 2013 %t A098736 Array[# Times@@ IntegerDigits@#&, 60, 0] (* _Vincenzo Librandi_, Oct 13 2013 *) %o A098736 (PARI) a(n) = vecprod(digits(n))*n; \\ _Michel Marcus_, Aug 06 2020 %Y A098736 Cf. A007954, A230101. %K A098736 base,easy,nonn %O A098736 0,3 %A A098736 _Alexandre Wajnberg_, Sep 30 2004 %E A098736 More terms from _Sam Alexander_, Jan 06 2005 %E A098736 Corrected by _Vincenzo Librandi_, Oct 13 2013