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 A110805 Sum of digits of n times number of digits of n. 4
 1, 2, 3, 4, 5, 6, 7, 8, 9, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Michael De Vlieger, Table of n, a(n) for n = 1..10000 EXAMPLE a(19) = 2 * (1 + 9) = 20. a(1235) = 4 * (1 + 2 + 3 + 5) = 44. MATHEMATICA Table[IntegerLength[n] * Total[IntegerDigits[n]], {n, 50}] (* Harvey P. Dale, Jul 31 2012 *) PROG (PARI) a(n) = sumdigits(n) * #digits(n); \\ Michel Marcus, Feb 24 2017 CROSSREFS Cf. A007953, A055642. Sequence in context: A125959 A043269 A122481 * A284255 A284253 A061499 Adjacent sequences:  A110802 A110803 A110804 * A110806 A110807 A110808 KEYWORD base,easy,nonn AUTHOR Amarnath Murthy, Aug 14 2005 STATUS approved

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Last modified July 24 02:36 EDT 2017. Contains 289717 sequences.