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A055796 as a simple table

na(n)
01
15
216
342
498
5210
6420
7792
81419
92431
104004
116370
129828
1314756
1421624
1531008
1643605
1760249
1881928
19109802
20145222
21189750
22245180
23313560
24397215
25498771
26621180
27767746
28942152
291148488
301391280
311675520
322006697
332390829
342834496
353344874
363929770

[1,5,16,42,98,210,420,792,1419,2431,4004,6370,
 9828,14756,21624,31008,43605,60249,81928,109802,
 145222,189750,245180,313560,397215,498771,621180,
 767746,942152,1148488,1391280,1675520,2006697,
 2390829,2834496,3344874,3929770]