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 A321243 a(n) is the product of n and all its decimal digits individually except the leftmost digit. 1
 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 11, 24, 39, 56, 75, 96, 119, 144, 171, 0, 21, 44, 69, 96, 125, 156, 189, 224, 261, 0, 31, 64, 99, 136, 175, 216, 259, 304, 351, 0, 41, 84, 129, 176, 225, 276, 329, 384, 441, 0, 51, 104, 159, 216, 275, 336, 399, 464, 531 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 COMMENTS First differs from A067079 at n=102: A067079(102) = 408 != a(102) = 0. LINKS Jacob Swales, Table of n, a(n) for n = 0..10000 EXAMPLE a(33) = 33*3 = 99. a(234) = 234*3*4 = 2808. MATHEMATICA a[n_] := n * If[n<10, 1, Times@@Rest[IntegerDigits[n]]]; Array[a, 100, 0] (* Amiram Eldar, Nov 15 2018 *) PROG (Python 3) for letter in range(len(str(n))):             if letter != 0:               seq_num = seq_num * int(n[letter])             ##seq_num = a(n) CROSSREFS Cf. A067079. Sequence in context: A256754 A265525 A056967 * A067079 A080434 A062567 Adjacent sequences:  A321240 A321241 A321242 * A321244 A321245 A321246 KEYWORD nonn,base AUTHOR Jacob Swales, Nov 14 2018 STATUS approved

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Last modified September 19 12:57 EDT 2019. Contains 327198 sequences. (Running on oeis4.)