A228389 - OEIS

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A228389 as a simple table

n	a(n)
1	13
2	169
3	3513
4	62546
5	1177709
6	21683149
7	402968942
8	7458864720
9	138305554175
10	2562514124813
11	47494743530686
12	880148347563002
13	16311635295084771
14	302290762813484314
15	5602201879906920864
16	103822064306056848780

[13,169,3513,62546,1177709,21683149,402968942, 7458864720,138305554175,2562514124813, 47494743530686,880148347563002,16311635295084771, 302290762813484314,5602201879906920864, 103822064306056848780]