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A296948 as a simple table

na(n)
14
236
3135
4620
53637
617450
786139
8451210
92267574
1011420744
1158323254
12295406628
131495704814
147596893701
1538524719319
16195316135549
17990921152875
185025881864695
1925488754160616
20129285719478533
21655737002374833

[4,36,135,620,3637,17450,86139,451210,2267574,
 11420744,58323254,295406628,1495704814,7596893701,
 38524719319,195316135549,990921152875,
 5025881864695,25488754160616,129285719478533,
 655737002374833]