A081551 as a triangular array
| | | | | | | | 1 |
| | | | | | | | 10 | | 11 |
| | | | | | | 100 | | 101 | | 102 |
| | | | | | 1000 | | 1001 | | 1002 | | 1003 |
| | | | | 10000 | | 10001 | | 10002 | | 10003 | | 10004 |
| | | | 100000 | | 100001 | | 100002 | | 100003 | | 100004 | | 100005 |
| | | 1000000 | | 1000001 | | 1000002 | | 1000003 | | 1000004 | | 1000005 | | 1000006 |
| | 10000000 | | 10000001 | | 10000002 | | 10000003 | | 10000004 | | 10000005 | | 10000006 | | 10000007 |
|
A081551 as a square array
1 | 10 | 100 | 1000 | 10000 | 100000 | 1000000 | 10000000
| 11 | 101 | 1001 | 10001 | 100001 | 1000001 | 10000001
| 102 | 1002 | 10002 | 100002 | 1000002 | 10000002
| 1003 | 10003 | 100003 | 1000003 | 10000003
| 10004 | 100004 | 1000004 | 10000004
| 100005 | 1000005 | 10000005
| 1000006 | 10000006
| 10000007
|
A081551 as an upper right triangle
1 | 10 | 100 | 1000 | 10000 | 100000 | 1000000 | 10000000
| | 11 | 101 | 1001 | 10001 | 100001 | 1000001 | 10000001
| | | 102 | 1002 | 10002 | 100002 | 1000002 | 10000002
| | | | 1003 | 10003 | 100003 | 1000003 | 10000003
| | | | | 10004 | 100004 | 1000004 | 10000004
| | | | | | 100005 | 1000005 | 10000005
| | | | | | | 1000006 | 10000006
| | | | | | | | 10000007
|
|