A130418 as a triangular array
| | | | | | | | | | | | 1 |
| | | | | | | | | | | | 1 | | 3 |
| | | | | | | | | | | 1 | | 5 | | 7 |
| | | | | | | | | | 1 | | 5 | | 7 | | 11 |
| | | | | | | | | 1 | | 7 | | 11 | | 13 | | 17 |
| | | | | | | | 1 | | 7 | | 11 | | 13 | | 17 | | 19 |
| | | | | | | 1 | | 11 | | 13 | | 17 | | 19 | | 23 | | 29 |
| | | | | | 1 | | 11 | | 13 | | 17 | | 19 | | 23 | | 29 | | 31 |
| | | | | 1 | | 11 | | 13 | | 17 | | 19 | | 23 | | 29 | | 31 | | 37 |
| | | | 1 | | 11 | | 13 | | 17 | | 19 | | 23 | | 29 | | 31 | | 37 | | 41 |
| | | 1 | | 13 | | 17 | | 19 | | 23 | | 29 | | 31 | | 37 | | 41 | | 43 | | 47 |
| | 1 | | 13 | | 17 | | 19 | | 23 | | 29 | | 31 | | 37 | | 41 | | 43 |
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A130418 as a square array
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| 3 | 5 | 5 | 7 | 7 | 11 | 11 | 11 | 11 | 13 | 13
| 7 | 7 | 11 | 11 | 13 | 13 | 13 | 13 | 17 | 17
| 11 | 13 | 13 | 17 | 17 | 17 | 17 | 19 | 19
| 17 | 17 | 19 | 19 | 19 | 19 | 23 | 23
| 19 | 23 | 23 | 23 | 23 | 29 | 29
| 29 | 29 | 29 | 29 | 31 | 31
| 31 | 31 | 31 | 37 | 37
| 37 | 37 | 41 | 41
| 41 | 43 | 43
| 47
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A130418 as an upper right triangle
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 3 | 5 | 5 | 7 | 7 | 11 | 11 | 11 | 11 | 13 | 13
| | | 7 | 7 | 11 | 11 | 13 | 13 | 13 | 13 | 17 | 17
| | | | 11 | 13 | 13 | 17 | 17 | 17 | 17 | 19 | 19
| | | | | 17 | 17 | 19 | 19 | 19 | 19 | 23 | 23
| | | | | | 19 | 23 | 23 | 23 | 23 | 29 | 29
| | | | | | | 29 | 29 | 29 | 29 | 31 | 31
| | | | | | | | 31 | 31 | 31 | 37 | 37
| | | | | | | | | 37 | 37 | 41 | 41
| | | | | | | | | | 41 | 43 | 43
| | | | | | | | | | | 47
| | | | | | | | | | |
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