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A296804 as a triangular array

1
22
383
415154
64147416
91221641641229
13308694101169430813
19855260567476747260585519
2824051014940956777054095610149240528
4165224076826110775440075440026110740768

A296804 as a square array

12346913192841
28154112230885524056522
3154716469426051014940768
4411641011674740956261107
6122694674777705754400
9308260540956754400
1385510149261107
19240540768
28
12346913192841
28154112230885524056522
3154716469426051014940768
4411641011674740956261107
6122694674777705754400
9308260540956754400
1385510149261107
19240540768
28