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A280437 as a simple table

na(n)
15
238
377
4138
5225
6360
7574
8920
91487
102422
113971
126542
1310814
1417914
1529713
1649314
1781861
18135876
19225470
20373996
21620083
221027598
231702087
242817898
254662910
267712270
2712749909
2821068730
2934800297
3057457632
3194828606
32156445952

[5,38,77,138,225,360,574,920,1487,2422,3971,6542,
 10814,17914,29713,49314,81861,135876,225470,
 373996,620083,1027598,1702087,2817898,4662910,
 7712270,12749909,21068730,34800297,57457632,
 94828606,156445952]