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A133589 as a simple table

na(n)
17
2243
31491
49551
5107647
6303027
75517973
827737957
92293650729
10412763041911
1146492090901
12426836115943
134895576080181
1477628540590583

[7,243,1491,9551,107647,303027,5517973,27737957,
 2293650729,412763041911,46492090901,426836115943,
 4895576080181,77628540590583]