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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
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
Sequence in context: A085942 A066308 A063462 * A002015 A257587 A257588
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

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