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A254040 as a triangular array

1
01
001
0022
00396
006304824
00989260300120
0018258120024002160720
003072051001575023940176405040
00562016207209268021168025872016128040320

A254040 as a square array

1000000000
100000000
12369183056
2930892587202016
6482601200510020720
2430024001575092680
120216023940211680
72017640258720
5040161280
40320
1000000000
100000000
12369183056
2930892587202016
6482601200510020720
2430024001575092680
120216023940211680
72017640258720
5040161280
40320