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”).

A123709 as a simple table

na(n)
11
22
33
44
53
64
73
84
94
106
113
128
133
146
157
164
173
188
193
208
217
226
233
248
254
266
274
288
293
3011
313
324
337
346
357
368
373
386
397
408
413
4211
433
448
458
466
473
488
494
508
517
528
533
548
557
568
577
586
593
6016
613
626
638
644
657
6612
673
688
697
7014
713
728
733
746
758
768

[1,2,3,4,3,4,3,4,4,6,3,8,3,6,7,4,3,8,3,8,7,6,3,8,
 4,6,4,8,3,11,3,4,7,6,7,8,3,6,7,8,3,11,3,8,8,6,3,8,
 4,8,7,8,3,8,7,8,7,6,3,16,3,6,8,4,7,12,3,8,7,14,3,
 8,3,6,8,8]