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”).

A329273 as a simple table

na(n)
11
20
30
41
50
61
70
83
93
103
110
121
130
143
153
163
170
181
190
203
213
223
230
245
255
265
275
285
290
301
310
325
335
345
355
365
370
383
393
403
410
421
430
443
453
463
470
485
495
505
515
525
530
545
555
565
575
585
590
601
610
625
635
645
655
665
670
683
693
703
710
721
730
745
755
765
775
785
790
803
813
823
830
845
855
865
875
885
890
907
917
927
937
947
957
967
970
983
993
1003

[1,0,0,1,0,1,0,3,3,3,0,1,0,3,3,3,0,1,0,3,3,3,0,5,
 5,5,5,5,0,1,0,5,5,5,5,5,0,3,3,3,0,1,0,3,3,3,0,5,5,
 5,5,5,0,5,5,5,5,5,0,1,0,5,5,5,5,5,0,3,3,3,0,1,0,5,
 5,5,5,5,0,3,3,3,0,5,5,5,5,5,0,7,7,7,7,7,7,7,0,3,3,
 3]