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A281104 as a simple table

na(n)
01
12
25
38
420
534
685
7130
8325
9552
101348
112090
125205
138842
1421589
1533450
1682965
17141866
18344389
19533162
201332245
212263594
225525845
238563370
2421239125
2536317866
2688163669
27136489642
28341067093
29579513002
301414530389
312192050858
325437134165
339297341098

[1,2,5,8,20,34,85,130,325,552,1348,2090,5205,8842,
 21589,33450,82965,141866,344389,533162,1332245,
 2263594,5525845,8563370,21239125,36317866,
 88163669,136489642,341067093,579513002,1414530389,
 2192050858,5437134165,9297341098]