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A047996 as a triangular array

1
11
111
1111
11211
112211
1134311
11355311
1147107411
11410141410411
1151222262212511
115153042423015511
11619436680664319611
11622

A047996 as a square array

11111111111111
1111111111111
112233445566
1124571012151922
11351014223043
113714264266
11410224280
114123066
1151543
11519
116
11
1

A047996 as an upper right triangle

11111111111111
1111111111111
112233445566
1124571012151922
11351014223043
113714264266
11410224280
114123066
1151543
11519
116
11
1

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Last modified May 24 03:21 EDT 2017. Contains 286937 sequences.