A132305 - OEIS

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A132305 as a simple table

n	a(n)
0	1
1	3
2	309
3	32847
4	4775301
5	764206503
6	131689759209
7	23857704965727
8	4487745064421061
9	869024373004460823
10	172218243516497425809
11	34778752398142969125627
12	7134304921516864247956281

[1,3,309,32847,4775301,764206503,131689759209, 23857704965727,4487745064421061, 869024373004460823,172218243516497425809, 34778752398142969125627,7134304921516864247956281]