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A118921 as a triangular array

2
42
1244
4012810
14040242028
50414080605684
1848504280200168168264
686418481008700560504528858
2574068643696252019601680158417162860
9724025740137289240705658805280

A118921 as a square array

241240140504184868642574097240
2412401405041848686425740
4824802801008369613728
10206020070025209240
285616856019607056
8416850416805880
26452815845280
8581716
2860
241240140504184868642574097240
2412401405041848686425740
4824802801008369613728
10206020070025209240
285616856019607056
8416850416805880
26452815845280
8581716
2860