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A144178 (2*2=4, 2*3=6, 2*4=8, 2*5=10, 2*6=12, 2*7=14, 2*8=16, 2*9=18, 2*10=20, 3*2=6,..) becomes (abs(2*2, 4*2, 3*6, 2*4, 8*2, 5*10, 2*6, 12*2, 7*14, 2*8, 16*2, 9*18, 2*10, 20*3, 2*6,..)) . 0
4, 8, 18, 8, 16, 50, 12, 24, 98, 16, 32, 162, 20, 60, 12, 9, 27, 48, 15, 45, 108, 21, 63, 192, 27, 81, 300, 8, 32, 36, 16, 64, 100, 24, 96, 196, 32, 128, 324, 40, 200, 20, 15, 75, 80, 25, 125, 180, 35, 175, 320, 45, 225, 500, 12, 72, 54, 24, 144, 150, 36, 216, 294, 48, 288 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

(.., 9*9=81, 9*10=90, 10*2=20, 10*3=30, 10*4=40, 10*5=50,

10*6=60, 10*7=70, 10*8=80, 10*9=90, 10*10=100, 11*2=22,..) becomes

(abs(.., 9*9, 81*9, 10*90, 10*2, 20*10, 3*30, 10*4, 40*10, 5*50, 10*6,

60*10, 7*70, 10*8, 80*10, 9*90, 10*10, 100*11, 2*22,..)).

LINKS

Table of n, a(n) for n=1..65.

EXAMPLE

2*2=4=a(1).

4*2=8=a(2).

3*6=18=a(3).

2*4=8=a(4).

8*2=16=a(5).

5*10=50=a(6), etc.

CROSSREFS

Cf. A143677.

Sequence in context: A119471 A145779 A252790 * A075558 A312824 A312825

Adjacent sequences:  A144175 A144176 A144177 * A144179 A144180 A144181

KEYWORD

nonn

AUTHOR

Juri-Stepan Gerasimov, Nov 19 2008

EXTENSIONS

Corrected (a 175 replaced by 225) by R. J. Mathar, Apr 29 2010

STATUS

approved

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Last modified January 20 16:46 EST 2019. Contains 319335 sequences. (Running on oeis4.)