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”).

A055290 as a simple table

na(n)
21
31
40
51
61
70
81
91
101
110
121
132
142
151
160
171
183
194
202
211
220
231
244
258
266
273
281
290
301
315
3214
3314
349
353
361
370
381
397
4023
4132
4226
4312
444
451
460
471
488
4936
5064
5166
5239
5316
544
551
560
571
5810
5954
60123
61158
62119
6360
6420
655
661
670
681
6912
7078
71219
72350
73325
74202
7583
7625
775
781
790

[1,1,0,1,1,0,1,1,1,0,1,2,2,1,0,1,3,4,2,1,0,1,4,8,
 6,3,1,0,1,5,14,14,9,3,1,0,1,7,23,32,26,12,4,1,0,1,
 8,36,64,66,39,16,4,1,0,1,10,54,123,158,119,60,20,
 5,1,0,1,12,78,219,350,325,202,83,25,5,1,0]