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A030897 as a simple table

na(n)
11
22
37
428
5143
6858
76012
848101
9432915
104329155
1147620715
12571448591
137428831692
14104003643691
151560054655379
1624960874486078
17424334866263326
187638027592739873
19145122524262057596
202902450485241151923

[1,2,7,28,143,858,6012,48101,432915,4329155,
 47620715,571448591,7428831692,104003643691,
 1560054655379,24960874486078,424334866263326,
 7638027592739873,145122524262057596,
 2902450485241151923]