|
Search: id:A116656
|
|
|
| A116656 |
|
Slowest growing sequence of semiprimes having the semiprime-pairwise-sum property: for any i<j, a(i)+a(j) is semiprime. |
|
+0
1
|
|
| 4, 6, 51, 115, 511, 5263, 116623, 204091, 823363, 1144363, 78325123, 883337023
(list; graph; listen)
|
|
|
OFFSET
|
1,1
|
|
|
EXAMPLE
|
Resulting semiprimes are:
{10,55,119,515,5267,116627},
{57,121,517,5269,116629},
{166,562,5314,116674},
{626,5378,116738},
{5774,117134},
{121886}.
|
|
CROSSREFS
|
Sequence in context: A134592 A165658 A066348 this_sequence A012933 A013164 A013024
Adjacent sequences: A116653 A116654 A116655 this_sequence A116657 A116658 A116659
|
|
KEYWORD
|
more,nonn
|
|
AUTHOR
|
Zak Seidov (zakseidov(AT)yahoo.com), Feb 21 2006
|
|
EXTENSIONS
|
Three more terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jan 23 2008
a(11)-a(12) from Donovan Johnson (donovan.johnson(AT)yahoo.com), Nov 11 2008
|
|
|
Search completed in 0.006 seconds
|
