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”).

A020680 as a simple table

na(n)
10
23
38
411
512
620
727
832
935
1044
1148
1256
1359
1472
1575
1680
1783
1884
1999
20107
21108
22116
23120
24128
25131
26140
27147
28155
29176
30179
31180
32192
33200
34203
35212
36219
37224
38227
39236
40243
41248
42251
43264
44275
45288
46291
47300
48308
49315
50320
51332
52336
53347
54363
55371
56372
57392
58395
59396

[0,3,8,11,12,20,27,32,35,44,48,56,59,72,75,80,83,
 84,99,107,108,116,120,128,131,140,147,155,176,179,
 180,192,200,203,212,219,224,227,236,243,248,251,
 264,275,288,291,300,308,315,320,332,336,347,363,
 371,372,392,395,396]