A016801 - 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

A016801 as a simple table

n	a(n)
0	1
1	14
2	135
3	1120
4	8621
5	63714
6	460195
7	3280340
8	23204841
9	163423414
10	1147981055
11	8052113160
12	56430306661
13	395275799114
14	2767989986715
15	19380181827580
16	135678323522081
17	949816596710814
18	6648989892621175

[1,14,135,1120,8621,63714,460195,3280340,23204841, 163423414,1147981055,8052113160,56430306661, 395275799114,2767989986715,19380181827580, 135678323522081,949816596710814,6648989892621175]