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”).

A006015 as a simple table

na(n)
00
12
23
31
48
510
611
79
812
914
1015
1113
124
136
147
155
1632
1734
1835
1933
2040
2142
2243
2341
2444
2546
2647
2745
2836
2938
3039
3137
3248
3350
3451
3549
3656
3758
3859
3957
4060
4162
4263
4361
4452
4554
4655
4753
4816
4918
5019
5117
5224
5326
5427
5525
5628
5730
5831
5929
6020
6122
6223
6321
64128
65130
66131
67129
68136
69138
70139

[0,2,3,1,8,10,11,9,12,14,15,13,4,6,7,5,32,34,35,
 33,40,42,43,41,44,46,47,45,36,38,39,37,48,50,51,
 49,56,58,59,57,60,62,63,61,52,54,55,53,16,18,19,
 17,24,26,27,25,28,30,31,29,20,22,23,21,128,130,
 131,129,136,138,139]