The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A098736 a(n) = product of n and all its digits. 10
 0, 1, 4, 9, 16, 25, 36, 49, 64, 81, 0, 11, 24, 39, 56, 75, 96, 119, 144, 171, 0, 42, 88, 138, 192, 250, 312, 378, 448, 522, 0, 93, 192, 297, 408, 525, 648, 777, 912, 1053, 0, 164, 336, 516, 704, 900, 1104, 1316, 1536, 1764, 0, 255, 520, 795, 1080, 1375, 1680, 1995 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS Vincenzo Librandi, Table of n, a(n) for n = 0..1000 Index entries for Colombian or self numbers and related sequences FORMULA If n=abcd (say) in decimal, then a(n) = abcd * a * b * c * d. a(n) = n*A007954(n). - R. J. Mathar, Sep 27 2013 EXAMPLE a(15) = 15*1*5=75 MAPLE with transforms; [seq(n*digprod(n), n=0..200)]; # N. J. A. Sloane, Oct 12 2013 MATHEMATICA Array[# Times@@ IntegerDigits@#&, 60, 0] (* Vincenzo Librandi, Oct 13 2013 *) PROG (PARI) a(n) = vecprod(digits(n))*n; \\ Michel Marcus, Aug 06 2020 CROSSREFS Cf. A007954, A230101. Sequence in context: A085942 A066308 A063462 * A002015 A257587 A257588 Adjacent sequences: A098733 A098734 A098735 * A098737 A098738 A098739 KEYWORD base,easy,nonn AUTHOR Alexandre Wajnberg, Sep 30 2004 EXTENSIONS More terms from Sam Alexander, Jan 06 2005 Corrected by Vincenzo Librandi, Oct 13 2013 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified May 23 10:34 EDT 2024. Contains 372760 sequences. (Running on oeis4.)