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A110805 Sum of digits of n times number of digits of n. 2
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

Table of n, a(n) for n=1..69.

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 *)

CROSSREFS

Cf. A007953, A055642.

Sequence in context: A125959 A043269 A122481 * A061499 A178051 A245346

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 December 7 21:15 EST 2016. Contains 278895 sequences.