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A251811 as a simple table

na(n)
1345
2538
31754
422922
5504148
617562309
7937980816
877093723774
99818091214983
101923038551366940
11579363831610999841
12269256446506102900848
13192945586040744107579841
14212997867807414690141275523

[345,538,1754,22922,504148,17562309,937980816,
 77093723774,9818091214983,1923038551366940,
 579363831610999841,269256446506102900848,
 192945586040744107579841,
 212997867807414690141275523]