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A060404 as a simple table

na(n)
00
11
23
38
425
578
6270
7926
83305
911868
1043232
11158586
12586530
132181088
148154710
1530620868
16115435625
17436654794
181656793374
196303490610
2024041649128
2191899730068
22352002058402
231350767683698
245192237233602
2519989786008160

[0,1,3,8,25,78,270,926,3305,11868,43232,158586,
 586530,2181088,8154710,30620868,115435625,
 436654794,1656793374,6303490610,24041649128,
 91899730068,352002058402,1350767683698,
 5192237233602,19989786008160]