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A026163 as a simple table

na(n)
11
22
36
416
545
6126
7356
81008
92862
108140
1123188
1266144
13188916
14540216
151546560
164432512
1712717513
1836526626
19105016686
20302228080
21870613689
222510249302
237244285436
2420924179920
2560487084775
26174994990326
27506669921982

[1,2,6,16,45,126,356,1008,2862,8140,23188,66144,
 188916,540216,1546560,4432512,12717513,36526626,
 105016686,302228080,870613689,2510249302,
 7244285436,20924179920,60487084775,174994990326,
 506669921982]