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A216220 as a triangular array

1
11
120
1320
04500
049500
001314000
00132714000
00040410000
0004081410000
000012112200000

A216220 as a square array

11110000000
1234400000
02591313000
005142740400
000144181121
000041122
00000
0000
000
00
0

A216220 as an upper right triangle

11110000000
1234400000
02591313000
005142740400
000144181121
000041122
00000
0000
000
00
0

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Last modified April 19 21:09 EDT 2024. Contains 371798 sequences. (Running on oeis4.)