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”).

A215501 as a simple table

na(n)
11
22
33
44
55
66
78
87
99
1010
1113
1211
1320
1414
1515
1612
1731
1816
1946
2017
2121
2222
2368
2418
2523
2632
2724
2825
2998
3026
31140
3219
3333
3447
3534
3627
37196
3869
3948
4028
41273
4235
43374
4436
4537
4699
47509
4829
4949
5038
5170
5250
53685
5439
5551
5640
57100
58141
59916
6041
611213
62197
6352
6430

[1,2,3,4,5,6,8,7,9,10,13,11,20,14,15,12,31,16,46,
 17,21,22,68,18,23,32,24,25,98,26,140,19,33,47,34,
 27,196,69,48,28,273,35,374,36,37,99,509,29,49,38,
 70,50,685,39,51,40,100,141,916,41,1213,197,52,30]