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A381117 as a simple table

na(n)
15
25
32
46
56
65
710
87
97
1014
1111
128
1312
149
1518
166
1717
1810
1917
204
2121
2211
2320
242
2519
2610
2734
284
2915
3017
3117
3222
3316
3419
3525
3616
372
3841
393
406
4141
4221
4324
4433
458
467
4746
485
4954
507
5148
526
537
545
5541
5613
5731
5818
595
6050
611
6249
6310
6426
6541
6624
6745
6853
6920
7021
7144
723

[5,5,2,6,6,5,10,7,7,14,11,8,12,9,18,6,17,10,17,4,
 21,11,20,2,19,10,34,4,15,17,17,22,16,19,25,16,2,
 41,3,6,41,21,24,33,8,7,46,5,54,7,48,6,7,5,41,13,
 31,18,5,50,1,49,10,26,41,24,45,53,20,21,44,3]