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A152507 as a simple table

na(n)
10
20
31268
45299607
58184246829
68518545179048
77375381060406666
85823800163847281553
94385124494281967244359
103220844410144729325085834
112335142573256061888321206228
121681577911560502131835994578291
131206702021031355908214429714812273

[0,0,1268,5299607,8184246829,8518545179048,
 7375381060406666,5823800163847281553,
 4385124494281967244359,3220844410144729325085834,
 2335142573256061888321206228,
 1681577911560502131835994578291,
 1206702021031355908214429714812273]