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A331787 as a simple table

na(n)
20
30
42
50
61
76
80
92
104
1114
120
131
142
157
1630
170
182
194
206
2116
2262
230
241
254
263
2714
2825
29126
300
312
322
336
348
3514
3652
37254
380
391
404
415
424
4313
4430
4579
46510
470
482
494
506
518
5210
5328
5462
55160
561022
570
581
592
603
618
625
6322
6423
6562
66241
672046
680
692
704
716
728
7310
7412
7534
7648
77126
78484
794094

[0,0,2,0,1,6,0,2,4,14,0,1,2,7,30,0,2,4,6,16,62,0,
 1,4,3,14,25,126,0,2,2,6,8,14,52,254,0,1,4,5,4,13,
 30,79,510,0,2,4,6,8,10,28,62,160,1022,0,1,2,3,8,5,
 22,23,62,241,2046,0,2,4,6,8,10,12,34,48,126,484,
 4094]