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A008920 Let j = | i - i_written_backwards |, k = j + j_written_backwards; then k is in this sequence. 0

%I

%S 0,18,99,198,261,342,423,504,585,666,747,828,1089,1170,1251,1332,1413,

%T 1494,1575,1656,1737,1818,1998,2871,3762,4653,5544,6435,7326,8217,

%U 9108,9999,10890,10989,11781,12672,13563,14454,15345,16236

%N Let j = | i - i_written_backwards |, k = j + j_written_backwards; then k is in this sequence.

%D J. H. Conway, personal communication.

%K nonn,base

%O 0,2

%A _N. J. A. Sloane_ and _J. H. Conway_

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Last modified September 18 16:49 EDT 2021. Contains 347531 sequences. (Running on oeis4.)