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A090826 as a simple table

na(n)
00
11
22
35
412
531
685
7248
8762
92440
108064
1127300
1294150
13329462
141166512
154170414
1615031771
1754559855
18199236416
19731434971
202697934577
219993489968
2237157691565
23138633745173
24518851050388
251947388942885
267328186394725

[0,1,2,5,12,31,85,248,762,2440,8064,27300,94150,
 329462,1166512,4170414,15031771,54559855,
 199236416,731434971,2697934577,9993489968,
 37157691565,138633745173,518851050388,
 1947388942885,7328186394725]