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A233491 as a simple table

na(n)
1388908
226851581
31853443458
4127934319483
58830686982464
6609539583118581
742073567268258250
82904134713566546240
9200458363340939984253
1013836670608153772979775
11955078402954534730110719

[388908,26851581,1853443458,127934319483,
 8830686982464,609539583118581,42073567268258250,
 2904134713566546240,200458363340939984253,
 13836670608153772979775,955078402954534730110719]