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A198261 as a triangular array

1
01
101
4301
4116601
768205401001
274494608615801501
18872841921431612814351402101
252522481150982727685724300828702242801

A198261 as a square array

101441768274491887284252522481
10316205460819214315098272
1064061516128768572
101080143543008
10151402870
1021224
1028
10
1
101441768274491887284252522481
10316205460819214315098272
1064061516128768572
101080143543008
10151402870
1021224
1028
10
1