A045600 - OEIS

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A045600 as a simple table

n	a(n)
1	1
2	13
3	169
4	2197
5	28561
6	371293
7	2684903
8	4826809
9	34903739
10	62748517
11	257734633
12	453748607
13	815730721
14	3185696137
15	3350550229
16	5898731891
17	10604499373
18	41414049781
19	42655053961
20	43557152977
21	76683514583

[1,13,169,2197,28561,371293,2684903,4826809, 34903739,62748517,257734633,453748607,815730721, 3185696137,3350550229,5898731891,10604499373, 41414049781,42655053961,43557152977,76683514583]