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A077408 as a simple table

na(n)
0103
1230
2436
3776
42424
53856
67400
720856
830928
960920
10220248
11242704
12432896
13857152
141460408
152754688
165134016
1716206744
1824437488
1944623424
20138104472
21201737128
22401511824
231438324704
241601682040
252820726320
265622321088

[103,230,436,776,2424,3856,7400,20856,30928,60920,
 220248,242704,432896,857152,1460408,2754688,
 5134016,16206744,24437488,44623424,138104472,
 201737128,401511824,1438324704,1601682040,
 2820726320,5622321088]