A016181 - 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

A016181 as a simple table

n	a(n)
0	1
1	17
2	219
3	2533
4	27731
5	294117
6	3058819
7	31411733
8	319882131
9	3239174917
10	32674224419
11	328719570933
12	3301036996531
13	33107258975717
14	331750812830019
15	3322255689810133
16	33255789828670931
17	332790528800696517

[1,17,219,2533,27731,294117,3058819,31411733, 319882131,3239174917,32674224419,328719570933, 3301036996531,33107258975717,331750812830019, 3322255689810133,33255789828670931, 332790528800696517]