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”).

A280210 as a simple table

na(n)
00
10
20
31
43
56
67
79
812
919
1021
1121
1221
1330
1436
1537
1636
1748
1858
1963
2057
2170
2278
2387
2478
2596
26105
27114
28105
29123
30133
31138
32126
33148
34162
35174
36156
37195
38207
39220
40192
41234
42250
43261
44237
45280
46312
47318
48282
49330
50363
51370
52315
53375
54405
55432
56366
57421
58453
59483
60417
61468
62507
63532
64474
65537
66568
67591
68519
69601
70630
71666
72570

[0,0,0,1,3,6,7,9,12,19,21,21,21,30,36,37,36,48,58,
 63,57,70,78,87,78,96,105,114,105,123,133,138,126,
 148,162,174,156,195,207,220,192,234,250,261,237,
 280,312,318,282,330,363,370,315,375,405,432,366,
 421,453,483,417,468,507,532,474,537,568,591,519,
 601,630,666,570]