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A116940 as a simple table

na(n)
00
13
26
311
416
523
630
739
848
959
1070
1183
1296
13111
14126
15143
16160
17179
18198
19219
20240
21263
22286
23311
24336
25363
26390
27419
28448
29479
30510
31543
32576
33611
34646
35683
36720
37759
38798
39839
40880
41923
42966
431011
441056
451103
461150
471199
481248
491299
501350
511403
521456

[0,3,6,11,16,23,30,39,48,59,70,83,96,111,126,143,
 160,179,198,219,240,263,286,311,336,363,390,419,
 448,479,510,543,576,611,646,683,720,759,798,839,
 880,923,966,1011,1056,1103,1150,1199,1248,1299,
 1350,1403,1456]