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A001404 as a triangular array

1
11
221
4521
911521
202512521
45572712521
102129622812521
231293141642812521
524665321146652812521
11891510729333148652812521
269934281656

A001404 as a square array

11249204510223152411892699
12511255712929366515103428
1251227621413217291656
125122864146333
125122865148
125122865
1251228
12512
125
12
1

A001404 as an upper right triangle

11249204510223152411892699
12511255712929366515103428
1251227621413217291656
125122864146333
125122865148
125122865
1251228
12512
125
12
1

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Last modified February 18 21:20 EST 2020. Contains 332028 sequences. (Running on oeis4.)