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A306609 as a simple table

na(n)
00
115
2465
311102
4236997
54751010
691474890
71712391420
831398038701
9566621243642
1010097483539038
11178113001428004
123115342162844450
1354103694774702292
14933929099838928692
1516037182307150776056
16274132978890654857853
174667160114821964359530
1879177297937966956038102
191338972240005810710258452

[0,15,465,11102,236997,4751010,91474890,
 1712391420,31398038701,566621243642,
 10097483539038,178113001428004,3115342162844450,
 54103694774702292,933929099838928692,
 16037182307150776056,274132978890654857853,
 4667160114821964359530,79177297937966956038102,
 1338972240005810710258452]