login

A261175 as a simple table

na(n)
01
11
21
33
45
58
613
719
826
935
1045
1156
1269
1384
14100
15117
16137
17158
18180
19204
20231
21258
22288
23319
24352
25387
26424
27463
28503
29546
30590
31636
32684
33734
34786
35840
36897
37955
381015
391077
401141
411207
421275
431345
441418
451492
461568
471647
481728
491811
501896
511983
522072
532163
542257
552352

[1,1,1,3,5,8,13,19,26,35,45,56,69,84,100,117,137,
 158,180,204,231,258,288,319,352,387,424,463,503,
 546,590,636,684,734,786,840,897,955,1015,1077,
 1141,1207,1275,1345,1418,1492,1568,1647,1728,1811,
 1896,1983,2072,2163,2257,2352]