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A299276 as a simple table

na(n)
01
15
214
331
459
5101
6161
7242
8347
9479
10641
11837
121070
131343
141659
152021
162433
172898
183419
193999
204641
215349
226126
236975
247899
258901
269985
2711154
2812411
2913759
3015201
3116741
3218382
3320127
3421979
3523941
3626017
3728210
3830523
3932959
4035521
4138213
4241038

[1,5,14,31,59,101,161,242,347,479,641,837,1070,
 1343,1659,2021,2433,2898,3419,3999,4641,5349,6126,
 6975,7899,8901,9985,11154,12411,13759,15201,16741,
 18382,20127,21979,23941,26017,28210,30523,32959,
 35521,38213,41038]