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”).

A271378 as a simple table

na(n)
01
15
225
31
45
525
61
75
825
91
105
1125
121
135
1425
151
165
1725
181
195
2025
211
225
2325
241
255
2625
271
285
2925
301
315
3225
331
345
3525
361
375
3825
391
405
4125
421
435
4425
451
465
4725
481
495
5025
511
525
5325
541
555
5625
571
585
5925
601
615
6225
631
645
6525
661
675
6825
691
705
7125
721
735
7425
751
765
7725

[1,5,25,1,5,25,1,5,25,1,5,25,1,5,25,1,5,25,1,5,25,
 1,5,25,1,5,25,1,5,25,1,5,25,1,5,25,1,5,25,1,5,25,
 1,5,25,1,5,25,1,5,25,1,5,25,1,5,25,1,5,25,1,5,25,
 1,5,25,1,5,25,1,5,25,1,5,25,1,5,25]