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A341738 as a triangular array

1
21
721
162521
417211221
9836140052921
239125049612312252721
57650412508877841134561210021
1393184322009995596821270016784085796721

A341738 as a square array

1271641982395761393
1225723611250504118432
12112400496125088200999
12529231277841559682
122527134561270016
121210078408
1257967
12
1
1271641982395761393
1225723611250504118432
12112400496125088200999
12529231277841559682
122527134561270016
121210078408
1257967
12
1