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A255471 as a simple table

na(n)
01
16
224
3100
4396
51596
66364
725500
8101916
9407836
101631004
116524700
1226097436
13104392476
14417564444
151670268700
166681052956
1726724255516
18106896934684
19427587913500
201710351304476
216841405916956
2227365622269724
23109462491875100
24437849961907996
251751399858816796
267005599412897564
2728022397696329500
28112089590695839516

[1,6,24,100,396,1596,6364,25500,101916,407836,
 1631004,6524700,26097436,104392476,417564444,
 1670268700,6681052956,26724255516,106896934684,
 427587913500,1710351304476,6841405916956,
 27365622269724,109462491875100,437849961907996,
 1751399858816796,7005599412897564,
 28022397696329500,112089590695839516]