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Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A378377 as a triangular array

1
13
1310
141035
151535126
162156126462
1728842104621716
183612033079217166435
194516549512873003643524310
1105522071520025005114402431092378

A378377 as a square array

1111111111
3345678910
1010152128364555
35355684120165220
126126210330495715
46246279212872002
1716171630035005
6435643511440
2431024310
92378
1111111111
3345678910
1010152128364555
35355684120165220
126126210330495715
46246279212872002
1716171630035005
6435643511440
2431024310
92378