login

A162711 as a triangular array

1
223
334345
4454564567
556567567856789
667678678967891678910
7787897891789107891017891011
889891891089101891011891011189101112
991910910191011910111910111291011121910111213

A162711 as a square array

123456789
2334455667788991
345456567678789891910
456756786789789189109101
5678967891789108910191011
678910789101891011910111
789101189101119101112
8910111291011121
910111213
123456789
2334455667788991
345456567678789891910
456756786789789189109101
5678967891789108910191011
678910789101891011910111
789101189101119101112
8910111291011121
910111213