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A294476 as a simple table

na(n)
01
13
26
39
414
518
625
730
838
944
1054
1161
1272
1381
1493
15103
16116
17127
18141
19154
20169
21183
22199
23215
24232
25249
26267
27285
28304
29323
30344
31364
32386
33407
34430
35453
36477
37501
38526
39551
40577
41603
42630
43657
44686
45714
46744
47773
48804
49834
50867
51898
52932
53964
54999

[1,3,6,9,14,18,25,30,38,44,54,61,72,81,93,103,116,
 127,141,154,169,183,199,215,232,249,267,285,304,
 323,344,364,386,407,430,453,477,501,526,551,577,
 603,630,657,686,714,744,773,804,834,867,898,932,
 964,999]