A028938 - 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

A028938 as a simple table

n	a(n)
1	0
2	3
3	-14
4	69
5	2065
6	-28888
7	2616119
8	-332513754
9	8280062505
10	18784454671297
11	-10663732503571536
12	8938035295591025771
13	31636113722016288336230
14	-41974401721854929811774227
15	754388827236735824355996347601

[0,3,-14,69,2065,-28888,2616119,-332513754, 8280062505,18784454671297,-10663732503571536, 8938035295591025771,31636113722016288336230, -41974401721854929811774227, 754388827236735824355996347601]