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”).

A101921 as a simple table

na(n)
10
21
34
44
58
69
712
811
916
1017
1120
1220
1324
1425
1528
1626
1732
1833
1936
2036
2140
2241
2344
2443
2548
2649
2752
2852
2956
3057
3160
3257
3364
3465
3568
3668
3772
3873
3976
4075
4180
4281
4384
4484
4588
4689
4792
4890
4996
5097
51100
52100
53104
54105
55108
56107
57112
58113
59116
60116
61120
62121
63124
64120
65128

[0,1,4,4,8,9,12,11,16,17,20,20,24,25,28,26,32,33,
 36,36,40,41,44,43,48,49,52,52,56,57,60,57,64,65,
 68,68,72,73,76,75,80,81,84,84,88,89,92,90,96,97,
 100,100,104,105,108,107,112,113,116,116,120,121,
 124,120,128]