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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
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 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,3
LINKS
EXAMPLE
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
CROSSREFS
Sequence in context: A143468 A133728 A127627 * A185911 A187954 A119302
KEYWORD
more,nonn,tabl
AUTHOR
Omar E. Pol, Jan 25 2009
STATUS
approved

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Last modified July 23 21:46 EDT 2024. Contains 374575 sequences. (Running on oeis4.)