登录

A276785型作为一个简单的表

n个a(n)
00
10
20
0
40
51
64
712
831
975
10175
11399
12894
131975
144313
159330
1620026
1742704
1890558
19191117
20401654
21841016
221755249
233652663
247581369
2515698735
2632438224
2766897295
28137718495
29283056086
30580906268
311190538424
322436854280
334982012329
3410174319500
3520756971236
3642306806495
3786153127395

[0,0,0,0,0,1,4,12,31,75,175,399,894,1975,4313,9330,20026,42704,90558,191117,401654,841016,1755249,3652663,7581369,15698735,32438224,66897295,137718495,283056086,580906268,1190538424,2436854280,4982012329,10174319500,20756971236,42306806495,86153127395]