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”).

A239680 as a simple table

na(n)
10
23
32
45
54
63
72
86
94
107
112
125
134
143
154
168
174
186
192
2011
212
223
232
246
258
267
274
285
294
307
312
329
332
347
354
3610
374
383
394
4014
414
423
432
445
458
463
472
488
494
5014
514
5211
534
546
554
566
572
587
592
6011
614
623
634
6411
6510
663
672
6811
692
707
712
7212
734
747
758
765
772
787
792
8018
816
827
832

[0,3,2,5,4,3,2,6,4,7,2,5,4,3,4,8,4,6,2,11,2,3,2,6,
 8,7,4,5,4,7,2,9,2,7,4,10,4,3,4,14,4,3,2,5,8,3,2,8,
 4,14,4,11,4,6,4,6,2,7,2,11,4,3,4,11,10,3,2,11,2,7,
 2,12,4,7,8,5,2,7,2,18,6,7,2]