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A171881 as a triangular array

0
11
211
3411
4271611
52561968325611
63125429496729676255974849876553611
746656298023223876953125340282366920938463463374607431768211456

A171881 as a square array

01234567
11427256312546656
1116196834294967296298023223876953125
112567625597484987340282366920938463463374607431768211456
1165536
11
1

A171881 as an upper right triangle

01234567
11427256312546656
1116196834294967296298023223876953125
112567625597484987340282366920938463463374607431768211456
1165536
11
1

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Last modified March 28 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)