登录

A210922型作为一个简单的表

n个a(n)
10
21
2
449
53312
6818235
7488196032
8845278581938
93889846475035188
1049699973559580684560

[0,1,2,49,3312,818235,488196032,845278581938,3889846475035188,49699973559580684560]