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A266213 as a triangular array

1
10
120
1420
16820
18181220
11032381620
1125088662020
114721701921022420
116982924503601462820
11812846291210026081983220

A266213 as a square array

11111111111
024681012141618
0281832507298128
02123888170292462
021666192450912
02201023601002
0224146608
0228198
0232
02
0

A266213 as an upper right triangle

11111111111
024681012141618
0281832507298128
02123888170292462
021666192450912
02201023601002
0224146608
0228198
0232
02
0

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Last modified August 21 16:01 EDT 2017. Contains 290890 sequences.