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A001254 as a simple table

na(n)
04
11
29
316
449
5121
6324
7841
82209
95776
1015129
1139601
12103684
13271441
14710649
151860496
164870849
1712752041
1833385284
1987403801
20228826129
21599074576
221568397609
234106118241
2410749957124
2528143753121
2673681302249
27192900153616
28505019158609
291322157322201
303461452808004
319062201101801
3223725150497409

[4,1,9,16,49,121,324,841,2209,5776,15129,39601,
 103684,271441,710649,1860496,4870849,12752041,
 33385284,87403801,228826129,599074576,1568397609,
 4106118241,10749957124,28143753121,73681302249,
 192900153616,505019158609,1322157322201,
 3461452808004,9062201101801,23725150497409]