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A203386 as a simple table

na(n)
11
21519
31644254
4781413998
5307215779816
6133980449920831
761265314914283103
827766798777082484160
912536363302159604534646
105684379185768992022017820
112583784784086688090876271693

[1,1519,1644254,781413998,307215779816,
 133980449920831,61265314914283103,
 27766798777082484160,12536363302159604534646,
 5684379185768992022017820,
 2583784784086688090876271693]