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A002203 as a simple table

na(n)
02
12
26
314
434
582
6198
7478
81154
92786
106726
1116238
1239202
1394642
14228486
15551614
161331714
173215042
187761798
1918738638
2045239074
21109216786
22263672646
23636562078
241536796802
253710155682
268957108166
2721624372014
2852205852194
29126036076402
30304278004998

[2,2,6,14,34,82,198,478,1154,2786,6726,16238,
 39202,94642,228486,551614,1331714,3215042,7761798,
 18738638,45239074,109216786,263672646,636562078,
 1536796802,3710155682,8957108166,21624372014,
 52205852194,126036076402,304278004998]