A193940 - OEIS

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A193940 as a simple table

n	a(n)
0	1
1	49
2	854
3	854
4	387791
5	2393355
6	10359802
7	13310435
8	172330849
9	2542542101
10	95257866194
11	1587461837108
12	3186699229889
13	3186699229889

[1,49,854,854,387791,2393355,10359802,13310435, 172330849,2542542101,95257866194,1587461837108, 3186699229889,3186699229889]