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A298645 as a triangular array

1
20
302
6062
1001688
20040243216
35090601088452
700210150310294262134
12604483368168801008816432
25201008784210024603208319225441248
462021001680504063009300106801076083604104

A298645 as a square array

123610203570126252462
0000000000
2616409021044810082100
2824601503367841680
83210831081621005040
168429488024606300
52262100832089300
134816319210680
432254410760
12488360
4104
123610203570126252462
0000000000
2616409021044810082100
2824601503367841680
83210831081621005040
168429488024606300
52262100832089300
134816319210680
432254410760
12488360
4104