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A249421 as a triangular array

0
00
100
0000
52000
210000
4000000
04400000
1723000000
10020000000
1214160000000
4100500000000
18684000000000
813630000000000
1184200000000000

A249421 as a square array

00105240171012418811
00021042014106138
0000043210864
000000065432
00000000000
0000000000
000000000
00000000
0000000
000000
00000
0000
000
00
0
00105240171012418811
00021042014106138
0000043210864
000000065432
00000000000
0000000000
000000000
00000000
0000000
000000
00000
0000
000
00
0