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A121400 as a triangular array

1
12
335
611811
1725301928
427274774770
114188223198194117184
302525609615509495301486
8271436174917331619130512827871313
2263401249185101465742063374338221003576

A121400 as a square array

113617421143028272263
2311257218852514364012
58307422360917494918
11197719861517335101
284719450916194657
7011749513054206
18430112823374
4867873382
13132100
3576

A121400 as an upper right triangle

113617421143028272263
2311257218852514364012
58307422360917494918
11197719861517335101
284719450916194657
7011749513054206
18430112823374
4867873382
13132100
3576

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Last modified May 6 17:59 EDT 2021. Contains 343586 sequences. (Running on oeis4.)