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A000222 as a simple table

na(n)
00
10
21
33
46
538
6213
71479
811692
9104364
101036809
1111344859
12135548466
131755739218
1424504637741
15366596136399
165852040379224
1799283915922264
181783921946910417
1933840669046326579
20675849838112277598
2114174636583759324798

[0,0,1,3,6,38,213,1479,11692,104364,1036809,
 11344859,135548466,1755739218,24504637741,
 366596136399,5852040379224,99283915922264,
 1783921946910417,33840669046326579,
 675849838112277598,14174636583759324798]