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A211211 as a simple table

na(n)
01
12
26
330
4205
51750
617766
7207942
82746815
940315858
10649688072
1111387466948
12215440517656
134371810051908
1494649397546302
152176321870192342
1652938365091640943
171357592080006964806
1836593629200726397630
191033979281229140895582
2030552322294916306960625

[1,2,6,30,205,1750,17766,207942,2746815,40315858,
 649688072,11387466948,215440517656,4371810051908,
 94649397546302,2176321870192342,52938365091640943,
 1357592080006964806,36593629200726397630,
 1033979281229140895582,30552322294916306960625]