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A303298 as a simple table

na(n)
00
11
218
321
455
560
6111
7118
8186
9195
10280
11291
12393
13406
14525
15540
16676
17693
18846
19865
201035
211056
221243
231266
241470
251495
261716
271743
281981
292010
302265
312296
322568
332601
342890
352925
363231
373268
383591
393630
403970
414011
424368
434411
444785
454830
465221
475268
485676
495725
506150
516201
526643
536696
547155
557210

[0,1,18,21,55,60,111,118,186,195,280,291,393,406,
 525,540,676,693,846,865,1035,1056,1243,1266,1470,
 1495,1716,1743,1981,2010,2265,2296,2568,2601,2890,
 2925,3231,3268,3591,3630,3970,4011,4368,4411,4785,
 4830,5221,5268,5676,5725,6150,6201,6643,6696,7155,
 7210]