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A123490 as a triangular array

1
21
421
8521
1614621
324122721
641228632821
12836534215744921
25610941366782260581021
5123281546239071556401741121
10249842218461953293322802586921221

A123490 as a square array

12481632641282565121024
1251441122365109432819842
12622863421366546221846
12732157782390719532
1284426015569332
129584012802
121074586
121192
1212
12
1

A123490 as an upper right triangle

12481632641282565121024
1251441122365109432819842
12622863421366546221846
12732157782390719532
1284426015569332
129584012802
121074586
121192
1212
12
1

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Last modified March 28 07:20 EDT 2024. Contains 371235 sequences. (Running on oeis4.)