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A024401 as a simple table

na(n)
11
23
36
411
516
622
730
838
947
1058
1169
1281
1395
14109
15124
16141
17158
18176
19196
20216
21237
22260
23283
24307
25333
26359
27386
28415
29444
30474
31506
32538
33571
34606
35641
36677
37715
38753
39792
40833
41874
42916
43960

[1,3,6,11,16,22,30,38,47,58,69,81,95,109,124,141,
 158,176,196,216,237,260,283,307,333,359,386,415,
 444,474,506,538,571,606,641,677,715,753,792,833,
 874,916,960]