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A196319 as a simple table

na(n)
15
257
3299
42255
517093
6120633
7879613
86412539
946525107
10338253489
112459404433
1217875504331
13129938237918
14944542662421
156865907710814
1649908732400817
17362790040553962
182637143711833537
1919169570408819186
20139344858180341619

[5,57,299,2255,17093,120633,879613,6412539,
 46525107,338253489,2459404433,17875504331,
 129938237918,944542662421,6865907710814,
 49908732400817,362790040553962,2637143711833537,
 19169570408819186,139344858180341619]