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”).

A113983 as a simple table

na(n)
01
11
21
31
42
51
61
73
83
91
101
115
127
134
141
151
169
1717
1813
195
201
211
2219
2345
2443
2521
266
271
281
2947
30135
31153
3289
3331
347
351
361
37137
38463
39603
40401
41161
4243
438
441
451
46465
471817
482657
491969
50881
51265
5257
539
541
551
561819
578121
5813111
5910633
605191
611709
62407
6373
6410
651

[1,1,1,1,2,1,1,3,3,1,1,5,7,4,1,1,9,17,13,5,1,1,19,
 45,43,21,6,1,1,47,135,153,89,31,7,1,1,137,463,603,
 401,161,43,8,1,1,465,1817,2657,1969,881,265,57,9,
 1,1,1819,8121,13111,10633,5191,1709,407,73,10,1]