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A337262 as a simple table

na(n)
02
15
215
348
4169
5618
62319
78804
833649
9129046
10495779
111906520
127335029
1328227578
14108642983
15418176700
161609656953
176196050718
1823850681323
1991809753632
20353409321213

[2,5,15,48,169,618,2319,8804,33649,129046,495779,
 1906520,7335029,28227578,108642983,418176700,
 1609656953,6196050718,23850681323,91809753632,
 353409321213]