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A273372 as a simple table

na(n)
11
281
3121
4361
5441
6841
7961
81521
91681
102401
112601
123481
133721
144761
155041
166241
176561
187921
198281
209801
2110201
2211881
2312321
2414161
2514641
2616641
2717161
2819321
2919881
3022201
3122801
3225281
3325921
3428561
3529241
3632041
3732761
3835721
3936481
4039601
4140401

[1,81,121,361,441,841,961,1521,1681,2401,2601,
 3481,3721,4761,5041,6241,6561,7921,8281,9801,
 10201,11881,12321,14161,14641,16641,17161,19321,
 19881,22201,22801,25281,25921,28561,29241,32041,
 32761,35721,36481,39601,40401]