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A291244 as a simple table

na(n)
04
115
260
3239
4952
53792
615104
760161
8239628
9954465
103801740
1115142752
1260315260
13240242367
14956911980
153811486495
1615181573232
1760469889136
18240858271816
19959365196977
203821257929948
2115220493940369
2260624914631700
23241475755550400
24961824703141876

[4,15,60,239,952,3792,15104,60161,239628,954465,
 3801740,15142752,60315260,240242367,956911980,
 3811486495,15181573232,60469889136,240858271816,
 959365196977,3821257929948,15220493940369,
 60624914631700,241475755550400,961824703141876]