A154792 Triangle read by rows in which row n lists the pair of noncomposite numbers that are equidistant from and nearest to n, with 0's inserted, as shown below in the example.
0, 1, 3, 1, 0, 5, 0, 3, 5, 0, 0, 3, 0, 7, 0, 0, 0, 5, 7, 0, 0, 0, 3, 0, 0, 0, 11, 0, 0, 0, 5, 0, 0, 11, 0, 0, 0, 0, 0, 7, 0, 11, 0, 0, 0, 0, 0, 0, 7, 0, 0, 13, 0, 0, 0
Offset: 1
Examples
Triangle begins: n ........ Pair 1 ..........0 2 ........ 1,3 3 ....... 1,0,5 4 ...... 0,3,5,0 5 ..... 0,3,0,7,0 6 .... 0,0,5,7,0,0