A113996 - OEIS

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A113996 as a simple table

n	a(n)
0	1
1	5
2	25
3	125
4	665
5	3825
6	23977
7	164105
8	1225225
9	9954981
10	87750065
11	836288501
12	8587255313
13	94679407585
14	1117195703729
15	14064269132049
16	188338637653329
17	2675444736963557
18	40212844609440521
19	637967091730240877

[1,5,25,125,665,3825,23977,164105,1225225,9954981, 87750065,836288501,8587255313,94679407585, 1117195703729,14064269132049,188338637653329, 2675444736963557,40212844609440521, 637967091730240877]

[1,5,25,125,665,3825,23977,164105,1225225,9954981,
 87750065,836288501,8587255313,94679407585,
 1117195703729,14064269132049,188338637653329,
 2675444736963557,40212844609440521,
 637967091730240877]