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”).

A242560 as a simple table

na(n)
12
21
32
42
54
63
76
84
96
105
1110
126
1312
147
1510
168
1716
189
1918
2010
2114
2211
2322
2412
2524
2613
2718
2814
2928
3015
3130
3216
3322
3417
3528
3618
3736
3819
3926
4020
4140
4221
4342
4422
4530
4623
4746
4824
4942
5025
5134
5226
5352
5427
5544
5628
5738
5829
5958
6030
6160
6231
6342
6432
6552
6633
6766
6834
6946
7035

[2,1,2,2,4,3,6,4,6,5,10,6,12,7,10,8,16,9,18,10,14,
 11,22,12,24,13,18,14,28,15,30,16,22,17,28,18,36,
 19,26,20,40,21,42,22,30,23,46,24,42,25,34,26,52,
 27,44,28,38,29,58,30,60,31,42,32,52,33,66,34,46,
 35]