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A286887 as a simple table

na(n)
12
23
35
49
515
626
744
876
9130
10223
11382
12655
131123
141925
153300
165657
179698
1816625
1928500
2048857
2183755
22143580
23246137
24421949
25723341
261240013
272125736
283644118
296247058
3010709240
3118358693
3231472038
3353952053
3492489213
35158552901
36271804912
37465951173

[2,3,5,9,15,26,44,76,130,223,382,655,1123,1925,
 3300,5657,9698,16625,28500,48857,83755,143580,
 246137,421949,723341,1240013,2125736,3644118,
 6247058,10709240,18358693,31472038,53952053,
 92489213,158552901,271804912,465951173]