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A116380号作为一个简单的表

n个a(n)
11
21
1
42
5
66
712
825
952
10113
11247
12548
131226
142770
156298
1614419
1733183
1876760
19178327
20415960
21973693
222286781
235386573
2412723097
2530127465
2671506140
27170081575
28405359177
29967899981
302315131955
315546597838
3213308818691
3331979667219
3476947325788

[1,1,1,2,3,6,12,25,52,113,247,548,1226,2770,6298,14419,33183,76760,178327,415960,973693,2286781,5386573,12723097,30127465,71506140,170081575,405359177,967899981,2315131955,5546597838,13308818691,31979667219,76947325788]