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A238121 as a triangular array

1
10
200
3100
55000
7163000
1143211000
1599101170000
2221537314590000
30430117483614640000
4283433373846132411210000
561529864215002878616156600000
7727652114852132470131540315823200000

A238121 as a square array

11235711152230425677
001516439921543083415292765
00032110137311743337864221148
00011714583638461500252132
000091461324878647013
00004112161515403
00001661582
0000032
00000
0000
000
00
0
11235711152230425677
001516439921543083415292765
00032110137311743337864221148
00011714583638461500252132
000091461324878647013
00004112161515403
00001661582
0000032
00000
0000
000
00
0