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A268459 as a simple table

na(n)
116
2176
3852
42776
57160
615816
731276
856912
997056
10157120
11243716
12364776
13529672
14749336
151036380
161405216
171872176
182455632
193176116
204056440
215121816
226399976
237921292
249718896
2511828800
2614290016
2717144676
2820438152
2924219176

[16,176,852,2776,7160,15816,31276,56912,97056,
 157120,243716,364776,529672,749336,1036380,
 1405216,1872176,2455632,3176116,4056440,5121816,
 6399976,7921292,9718896,11828800,14290016,
 17144676,20438152,24219176]