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A277938 as a triangular array

1
10
110
1220
13550
1491480
15142830160
1620487268280
172775141183145490
1835110245396443298830
1944154393751105810266001420
11054208

A277938 as a square array

111111111111
012345678910
0259142027354454
0514284875110154208
083072141245393
01668183396751
0281454431058
0492981026
083600
0142
0

A277938 as an upper right triangle

111111111111
012345678910
0259142027354454
0514284875110154208
083072141245393
01668183396751
0281454431058
0492981026
083600
0142
0

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Last modified March 28 17:42 EDT 2024. Contains 371254 sequences. (Running on oeis4.)