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A109597 Concatenation of Harshad k and its 10's complement is a Harshad number. 0

%I #3 Dec 15 2017 17:36:54

%S 10,20,30,40,50,60,70,80,90,100,108,192,200,220,300,400,410,444,500,

%T 600,612,700,800,864,900,1000,1002,1224,1380,1520,1800,1853,2000,2001,

%U 2080,2112,2220,2223,2408,2445,2556,2640,2667,2704,2889,2926,3000,3060,3222

%N Concatenation of Harshad k and its 10's complement is a Harshad number.

%C Is (2000,2001) the only consecutive pair in this sequence?

%e 192 is a term because 10^3-192 = 808 and 192808 has digital sum 28 and

%e 192808/28 = 6886.

%Y Cf. A005349.

%K base,easy,nonn

%O 0,1

%A _Jason Earls_, Jul 29 2005

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Last modified March 29 08:01 EDT 2024. Contains 371265 sequences. (Running on oeis4.)