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A233816 as a simple table

na(n)
1155488
21671748
316476460
4208935048
52269466400
632723763904
7376273555864
86112734012140
972958370707804
101313532872947608
1116029976501793984
12312343393699445328
133856492600968849980
1479437491904700286184

[155488,1671748,16476460,208935048,2269466400,
 32723763904,376273555864,6112734012140,
 72958370707804,1313532872947608,16029976501793984,
 312343393699445328,3856492600968849980,
 79437491904700286184]