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A233440 as a triangular array

0
10
200
3003
400164
500502540
60012090288216
700245245117617641603
800448560358480641465613000
900756113490722721674196131625118872
100012002100201607560027480073125013208001202880

A233440 as a square array

012345678910
0000000000
000000000
316501202454487561200
4259024556011342100
4028811763584907220160
216176480642721675600
16031465674196274800
13000131625731250
1188721320800
1202880
012345678910
0000000000
000000000
316501202454487561200
4259024556011342100
4028811763584907220160
216176480642721675600
16031465674196274800
13000131625731250
1188721320800
1202880