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A016089 as a simple table

na(n)
11
26
318
454
5162
6486
71458
81926
94374
105778
1113122
1217334
1339366
1452002
15118098
16156006
17206082
18354294
19468018
20618246
211062882
221404054
231854738
242471058
253188646
264212162
275564214
287413174
299565938
3012636486
3116692642
3222050774

[1,6,18,54,162,486,1458,1926,4374,5778,13122,
 17334,39366,52002,118098,156006,206082,354294,
 468018,618246,1062882,1404054,1854738,2471058,
 3188646,4212162,5564214,7413174,9565938,12636486,
 16692642,22050774]