login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A039728 as a simple table

na(n)
11
22
33
43
53
64
74
84
95
105
116
126
136
146
158
167
177
188
198
208
218
2210
2310
2410
2511
2611
2712
2812
2912
3012
3112
3216
3312
3415
3514
3613
3715
3815
3914
4016
4115
4216
4316
4416
4516
4620
4719
4820
4919
5020
5120
5221
5320
5422
5523
5622
5723
5824
5924
6024
6124
6224
6324
6432
6526
6627
6728
6824
6927
7027
7125
7230
7326
7427
7529
7630

[1,2,3,3,3,4,4,4,5,5,6,6,6,6,8,7,7,8,8,8,8,10,10,
 10,11,11,12,12,12,12,12,16,12,15,14,13,15,15,14,
 16,15,16,16,16,16,20,19,20,19,20,20,21,20,22,23,
 22,23,24,24,24,24,24,24,32,26,27,28,24,27,27,25,
 30,26,27,29,30]