A180902 - 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

A180902 as a simple table

n	a(n)
1	1
2	7
3	70
4	763
5	8715
6	102221
7	1220268
8	14749175
9	179930563
10	2210840169
11	27320772214
12	339198895902
13	4227660547195
14	52864983381874
15	662907897706177
16	8332812488242325
17	104966459288054037
18	1324710070914750097

[1,7,70,763,8715,102221,1220268,14749175, 179930563,2210840169,27320772214,339198895902, 4227660547195,52864983381874,662907897706177, 8332812488242325,104966459288054037, 1324710070914750097]