A223912 - 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

A223912 as a simple table

n	a(n)
1	3
2	36
3	666
4	14123
5	319156
6	7526024
7	183720802
8	4620831232
9	119279565646
10	3149193338709
11	84781194626719
12	2321280055370071
13	64493788929080253
14	1814933493902398900
15	51651065174273533812

[3,36,666,14123,319156,7526024,183720802, 4620831232,119279565646,3149193338709, 84781194626719,2321280055370071,64493788929080253, 1814933493902398900,51651065174273533812]