login

A278743 as a simple table

na(n)
21
33
42
55
69
73
87
94
1017
114
129
1315
1421
1511
165
1711
1825
1925
2013
217
226
2313
247
2529
2615
2716
2825
297
3015
319
3233
3317
3410
3528
3657
378
3817
3949
4037
4119
4210
4331
4463
4521
469
4719
4843
4941
5021
5134
5234
5369
5423
5512
5610
5721
5813
5945
6023
6151
6237
6375
6425
6513
6667
6711
6823
6942
7049
7125

[1,3,2,5,9,3,7,4,17,4,9,15,21,11,5,11,25,25,13,7,
 6,13,7,29,15,16,25,7,15,9,33,17,10,28,57,8,17,49,
 37,19,10,31,63,21,9,19,43,41,21,34,34,69,23,12,10,
 21,13,45,23,51,37,75,25,13,67,11,23,42,49,25]