login

A279415 as a triangular array

0
04
024
0044
00244
000444
0002444
00004444
000024444
0000044444
00000244444
000000444444
000000244

A279415 as a square array

0000000000000
420000000000
44200000000
4442000000
444420000
44444200
4444442
444444
44444
444
44
4
0000000000000
420000000000
44200000000
4442000000
444420000
44444200
4444442
444444
44444
444
44
4