A203459 - 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

A203459 as a simple table

n	a(n)
1	1
2	686
3	237999
4	44974778
5	9441977403
6	2078403848722
7	449985495293440
8	97229907706009899
9	21076066091178687992
10	4568715563183005120358
11	989906518295763028607606
12	214487030281717487899262669

[1,686,237999,44974778,9441977403,2078403848722, 449985495293440,97229907706009899, 21076066091178687992,4568715563183005120358, 989906518295763028607606, 214487030281717487899262669]