login

A278690 as a simple table

na(n)
01
12
25
39
418
531
654
788
8144
9225
10351
11531
12800
131179
141728
152492
163573
175058
187119
199918
2013743
2118882
2225810
2335028
2447313
2563513
2684883
27112833
28149373
29196803
30258309
31337590
32439650
33570357
34737496
35950270
361220688
371563021
381995642
392540466
403225386

[1,2,5,9,18,31,54,88,144,225,351,531,800,1179,
 1728,2492,3573,5058,7119,9918,13743,18882,25810,
 35028,47313,63513,84883,112833,149373,196803,
 258309,337590,439650,570357,737496,950270,1220688,
 1563021,1995642,2540466,3225386]