A162582 - OEIS

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A162582 as a simple table

n	a(n)
0	1
1	2
2	6
3	10
4	146
5	282
6	826
7	1370
8	4204986
9	8408602
10	25223066
11	42037530
12	615687706
13	1189337882
14	3483938586
15	5778539290
16	2305851850537847066
17	4611703695297154842
18	13835111074334385946
19	23058518453371617050

[1,2,6,10,146,282,826,1370,4204986,8408602, 25223066,42037530,615687706,1189337882,3483938586, 5778539290,2305851850537847066, 4611703695297154842,13835111074334385946, 23058518453371617050]