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A061160 as a simple table

na(n)
01
11
25
350
4215
5646
68711
725475
8105925
93091270
1011691247
1136809705
12445872155
131364113925
145085042010
1550975292560
16183383680088
17588817265695
1819512559194875
1962369303509475
20224877933068647
212214198452392027
227686538660149565
2325124342108522750

[1,1,5,50,215,646,8711,25475,105925,3091270,
 11691247,36809705,445872155,1364113925,5085042010,
 50975292560,183383680088,588817265695,
 19512559194875,62369303509475,224877933068647,
 2214198452392027,7686538660149565,
 25124342108522750]