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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

Table of n, a(n) for n=1..55.

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

Cf. A008578, A154720, A154721, A154722, A154723, A154791.

Sequence in context: A143468 A133728 A127627 * A185911 A187954 A119302

Adjacent sequences:  A154789 A154790 A154791 * A154793 A154794 A154795

KEYWORD

more,nonn,tabl

AUTHOR

Omar E. Pol, Jan 25 2009

STATUS

approved

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Last modified October 18 05:45 EDT 2019. Contains 328146 sequences. (Running on oeis4.)