A096949 - OEIS

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A096949 as a simple table

n	a(n)
0	1
1	28
2	421
3	26528
4	2148803
5	7878956
6	2765513941
7	74668877408
8	3808112752813
9	651187280816108
10	2511722368895123
11	173308843453994432
12	7798897955430811787
13	1895132203169713822916
14	54958833891921780540589

[1,28,421,26528,2148803,7878956,2765513941, 74668877408,3808112752813,651187280816108, 2511722368895123,173308843453994432, 7798897955430811787,1895132203169713822916, 54958833891921780540589]