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A233956 as a simple table

na(n)
1183304
28268188
3387379488
418908052288
5929465951096
646042738610392
72282517634494836
8113380189011729556
95630929510031599252
10279851750134672615524
1113905185381072703432488
12691137139402648660866632

[183304,8268188,387379488,18908052288,
 929465951096,46042738610392,2282517634494836,
 113380189011729556,5630929510031599252,
 279851750134672615524,13905185381072703432488,
 691137139402648660866632]