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A197803 as a simple table

na(n)
16
2496
322742
41003304
545619023
62076384112
794343594548
84281509896358
9194608470264250
108843165356246981
11401738582610521643
1218252432225115868140
13829303172132470927219
1437678616097510599424872

[6,496,22742,1003304,45619023,2076384112,
 94343594548,4281509896358,194608470264250,
 8843165356246981,401738582610521643,
 18252432225115868140,829303172132470927219,
 37678616097510599424872]