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A218169 as a simple table

na(n)
12
21084357
3558017
440844333
59717439
6205807697
7316363037
814326787
9106741703
10931524977
11227145983
127031729687
137284563827
1452156681
157914854663

[2,1084357,558017,40844333,9717439,205807697,
 316363037,14326787,106741703,931524977,227145983,
 7031729687,7284563827,52156681,7914854663]