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A295988 as a simple table

na(n)
13
24
35
47
515
655
7211
8391
9595
103461
115029
125220
135333
148073
1515797
1616132
1721457
1829283
1978791
2085143
21179973
22211030
23445774
24464844
25511057

[3,4,5,7,15,55,211,391,595,3461,5029,5220,5333,
 8073,15797,16132,21457,29283,78791,85143,179973,
 211030,445774,464844,511057]