login

A253284 as a triangular array

1
22
61812
24144240120
1201200360042001680
72010800504001008009072030240
5040105840705600211680031752002328480665280
4032011289601016064042336000931392001117670406918912017297280

A253284 as a square array

12624120720504040320
2181441200108001058401128960
1224036005040070560010160640
1204200100800211680042336000
168090720317520093139200
302402328480111767040
66528069189120
17297280
12624120720504040320
2181441200108001058401128960
1224036005040070560010160640
1204200100800211680042336000
168090720317520093139200
302402328480111767040
66528069189120
17297280