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A187444 as a simple table

na(n)
01
15
235
3231
41716
512155
692378
7676039
85200300
938779380
10300540195
112268783825
1217672631900
13134564468610
141052049481860
158061900920775
1663205303218876
17486734856412028
183824345300380220
1929566145391215356
20232714176627630544
211804857108504066435

[1,5,35,231,1716,12155,92378,676039,5200300,
 38779380,300540195,2268783825,17672631900,
 134564468610,1052049481860,8061900920775,
 63205303218876,486734856412028,3824345300380220,
 29566145391215356,232714176627630544,
 1804857108504066435]