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A011849 as a simple table

na(n)
00
10
20
30
41
53
66
711
818
928
1040
1155
1273
1395
14121
15151
16186
17226
18272
19323
20380
21443
22513
23590
24674
25766
26866
27975
281092
291218
301353
311498
321653
331818
341994
352181
362380
372590
382812
393046
403293
413553
423826

[0,0,0,0,1,3,6,11,18,28,40,55,73,95,121,151,186,
 226,272,323,380,443,513,590,674,766,866,975,1092,
 1218,1353,1498,1653,1818,1994,2181,2380,2590,2812,
 3046,3293,3553,3826]