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A000699 as a simple table

na(n)
01
11
21
34
427
5248
62830
738232
8593859
910401712
10202601898
114342263000
12101551822350
132573779506192
1470282204726396
152057490936366320
1664291032462761955
172136017303903513184
1875197869250518812754
192796475872605709079512
20109549714522464120960474
214509302910783496963256400
22194584224274515194731540740

[1,1,1,4,27,248,2830,38232,593859,10401712,
 202601898,4342263000,101551822350,2573779506192,
 70282204726396,2057490936366320,64291032462761955,
 2136017303903513184,75197869250518812754,
 2796475872605709079512,109549714522464120960474,
 4509302910783496963256400,
 194584224274515194731540740]