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”).

A215259 as a simple table

na(n)
00
10
21
32
42
54
64
76
87
98
108
1110
1210
1313
1413
1513
1613
1716
1816
1919
2019
2119
2219
2322
2422
2524
2624
2725
2825
2928
3028
3132
3233
3333
3433
3533
3633
3736
3836
3936
4036
4140
4240
4344
4444
4544
4644
4748
4848
4949
5049
5149
5249
5353
5453
5553
5653
5753
5853
5958
6058
6162
6262
6362
6462
6562
6662
6767
6867
6967
7067
7171
7271
7375
7475
7575
7675
7775
7875
7979
8079
8181
8281
8385
8485
8585
8685
8785
8885
8989
9089
9189
9289
9389
9489

[0,0,1,2,2,4,4,6,7,8,8,10,10,13,13,13,13,16,16,19,
 19,19,19,22,22,24,24,25,25,28,28,32,33,33,33,33,
 33,36,36,36,36,40,40,44,44,44,44,48,48,49,49,49,
 49,53,53,53,53,53,53,58,58,62,62,62,62,62,62,67,
 67,67,67,71,71,75,75,75,75,75,75,79,79,81,81,85,
 85,85,85,85,85,89,89,89,89,89,89]