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”).

A005236 as a simple table

na(n)
12
23
34
45
56
68
79
810
912
1014
1117
1218
1320
1424
1526
1628
1730
1833
1938
2042
2148
2250
2354
2460
2565
2674
2782
2884
2990
3098
31102
32108
33110
34114
35126
36129
37138
38150
39164
40168
41174
42180
43194
44198
45228
46234
47244
48252
49258
50264
51270
52290
53294
54318
55348
56354
57360
58384
59390
60402

[2,3,4,5,6,8,9,10,12,14,17,18,20,24,26,28,30,33,
 38,42,48,50,54,60,65,74,82,84,90,98,102,108,110,
 114,126,129,138,150,164,168,174,180,194,198,228,
 234,244,252,258,264,270,290,294,318,348,354,360,
 384,390,402]