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A371154 as a simple table

na(n)
01
13
25
38
411
516
621
726
833
940
1047
1156
1265
1374
1485
1596
16107
17120
18133
19146
20161
21176
22191
23208
24225
25242
26261
27280
28299
29320
30341
31362
32385
33408
34431
35456
36481
37506
38533
39560
40587

[1,3,5,8,11,16,21,26,33,40,47,56,65,74,85,96,107,
 120,133,146,161,176,191,208,225,242,261,280,299,
 320,341,362,385,408,431,456,481,506,533,560,587]