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”).

A209257 as a simple table

na(n)
04
17
210
316
428
552
697
7193
8301
9493
101150
111162
123076
132386
143283
1510423
165827
1720659
189646
1937852
2015112
2118592
2283692
2327331
24133660
2538857
2645832
27251050
2862566
29367318
3083527
31523315
32109375
33124351
34852826
35158872
361152508
37200140

[4,7,10,16,28,52,97,193,301,493,1150,1162,3076,
 2386,3283,10423,5827,20659,9646,37852,15112,18592,
 83692,27331,133660,38857,45832,251050,62566,
 367318,83527,523315,109375,124351,852826,158872,
 1152508,200140]