login

A199085 as a simple table

na(n)
11
21
32
44
57
611
715
820
926
1032
1139
1247
1355
1464
1574
1684
1795
18107
19119
20132
21146
22160
23175
24191
25207
26224
27242
28260
29279
30299
31319
32340
33362
34384
35407
36431
37455
38480
39506
40532
41559
42587
43615
44644
45674
46704
47735
48767
49799
50832
51866
52900
53935
54971
551007
561044

[1,1,2,4,7,11,15,20,26,32,39,47,55,64,74,84,95,
 107,119,132,146,160,175,191,207,224,242,260,279,
 299,319,340,362,384,407,431,455,480,506,532,559,
 587,615,644,674,704,735,767,799,832,866,900,935,
 971,1007,1044]