A219407 - 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

A219407 as a simple table

n	a(n)
1	12
2	351
3	8173
4	193116
5	4560446
6	107701719
7	2543481662
8	60067211485
9	1418553120783
10	33500701298909
11	791156061757424
12	18684024494159794
13	441243879877927791
14	10420461699586486378
15	246090715301965835785

[12,351,8173,193116,4560446,107701719,2543481662, 60067211485,1418553120783,33500701298909, 791156061757424,18684024494159794, 441243879877927791,10420461699586486378, 246090715301965835785]