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A259356 as a triangular array

0
01
012
0293
0538354
014181284955
042938222513202106
01325210178161581045964067

A259356 as a square array

00000000
11251442132
29381819385210
335284222517816
495132015810
52104596
6406
7
00000000
11251442132
29381819385210
335284222517816
495132015810
52104596
6406
7