A025999 - OEIS

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A025999 as a simple table

n	a(n)
0	1
1	26
2	445
3	6370
4	82901
5	1019746
6	12105885
7	140404290
8	1603014501
9	18104952866
10	202945103725
11	2262802497410
12	25134485221301
13	278430633932386
14	3078357517755965
15	33986947913921730
16	374856803115095301

[1,26,445,6370,82901,1019746,12105885,140404290, 1603014501,18104952866,202945103725,2262802497410, 25134485221301,278430633932386,3078357517755965, 33986947913921730,374856803115095301]