login

A278218 as a triangular array

1
11
121
1221
14641
126621
16612661
12666621
18122430241281
1436606060603641
16121202101802101201261
1263021021021021030621
112306060360420360606030121

A278218 as a square array

1111111111111
1224262846212
126666123612630
14612624601203060
1266306021021060
1662460180210360
121260210210420
1836120210360
14123060
16660
1230
112
1
1111111111111
1224262846212
126666123612630
14612624601203060
1266306021021060
1662460180210360
121260210210420
1836120210360
14123060
16660
1230
112
1