A084725 - 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

A084725 as a simple table

n	a(n)
1	3
2	13
3	97
4	1153
5	18433
6	331777
7	6635521
8	145981441
9	3795517441
10	136638627841
11	5738822369281
12	252508184248321
13	25250818424832001
14	3030098210979840001
15	375732178161500160001
16	60868612862163025920001

[3,13,97,1153,18433,331777,6635521,145981441, 3795517441,136638627841,5738822369281, 252508184248321,25250818424832001, 3030098210979840001,375732178161500160001, 60868612862163025920001]