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A161208 as a simple table

na(n)
00
11
23
36
410
515
621
728
834
940
1049
1161
1276
1391
14105
15120
16130
17136
18145
19158
20175
21196
22221
23249
24276
25298
26322
27354
28395
29435
30469
31502
32520
33526
34535
35548
36565
37586
38611
39640
40669
41696
42729
43774
44831
45894
46955
471015
481066
491096
501120
511155
521202
531261
541332

[0,1,3,6,10,15,21,28,34,40,49,61,76,91,105,120,
 130,136,145,158,175,196,221,249,276,298,322,354,
 395,435,469,502,520,526,535,548,565,586,611,640,
 669,696,729,774,831,894,955,1015,1066,1096,1120,
 1155,1202,1261,1332]