A175545 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

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”).

Other ways to Give

A175545 as a simple table

n	a(n)
1	3
2	27
3	33
4	333
5	369
6	909
7	2151
8	2439
9	2997
10	3333
11	27027
12	33333
13	37683
14	41841
15	76923
16	90909
17	142857
18	194841
19	243603
20	333333

[3,27,33,333,369,909,2151,2439,2997,3333,27027, 33333,37683,41841,76923,90909,142857,194841, 243603,333333]