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A245285 as a simple table

na(n)
02
16
218
352
4145
5400
61093
72977
88098
922021
1059868
11162748
12442406
131202597
143269009
158886102
1624154944
1765659960
18178482291
19485165185
201318815724

[2,6,18,52,145,400,1093,2977,8098,22021,59868,
 162748,442406,1202597,3269009,8886102,24154944,
 65659960,178482291,485165185,1318815724]