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A047864 as a simple table

na(n)
01
11
22
37
441
5376
65177
7103237
82922446
9116011231
106433447397
11498234407452
1254007795331921
138213123246906761
141756336596363006842
15528975889250504033527
16224688018516023267969441
17134708289561117007261966816

[1,1,2,7,41,376,5177,103237,2922446,116011231,
 6433447397,498234407452,54007795331921,
 8213123246906761,1756336596363006842,
 528975889250504033527,224688018516023267969441,
 134708289561117007261966816]