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A300211 as a simple table

na(n)
18
2128
31651
422194
5298600
64023881
754246856
8731384148
99861234001
10132960046732
111792718900628
1224171499455083
13325908051174738
144394268763240974
1559248607955630411
16798858184228775812

[8,128,1651,22194,298600,4023881,54246856,
 731384148,9861234001,132960046732,1792718900628,
 24171499455083,325908051174738,4394268763240974,
 59248607955630411,798858184228775812]