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A316475 as a simple table

na(n)
11
21
32
43
55
67
714
825
950
10101
11207
12426
13902
141917
154108
168887
1719335
1842330
1993130
20205894
21456960
221018098
232275613
245102248
2511471107
2625856413

[1,1,2,3,5,7,14,25,50,101,207,426,902,1917,4108,
 8887,19335,42330,93130,205894,456960,1018098,
 2275613,5102248,11471107,25856413]