|
Search: id:A105089
|
|
|
| A105089 |
|
Sum of the primes in ordered 3 X 3 prime squares. |
|
+0
1
|
|
| 100, 401, 763, 1163, 1601, 2053, 2501, 3017, 3517, 3997, 4479, 5105, 5571, 6045, 6639, 7217, 7741, 8331, 8927, 9417, 9949, 10613, 11201, 11711, 12467, 13063, 13559, 14159, 14653, 15311, 15937, 16661, 17253, 17959, 18531, 19093, 19813, 20461
(list; graph; listen)
|
|
|
OFFSET
|
1,1
|
|
|
FORMULA
|
An ordered 3 X 3 prime square is 9 consecutive primes arranged in a square of the form p(9n-8) p(9n-7) p(9n-6) p(9n-5) p(9n-4) p(9n-3) p(9n-2) p(9n-1) p(9n) n=1, 2, ...
|
|
EXAMPLE
|
The first 3 X 3 prime square
2 3 5
7 11 13
17 19 23
adds up to 100 the first entry in the table.
|
|
PROGRAM
|
(PARI) sumsq3x3(n) = { local(x, j, s); forstep(x=0, n, 9, s=0; for(j=1, 9, s += prime(x+j); ); print1(s", ") ) }
|
|
CROSSREFS
|
Sequence in context: A138668 A017174 A017270 this_sequence A017510 A017642 A093004
Adjacent sequences: A105086 A105087 A105088 this_sequence A105090 A105091 A105092
|
|
KEYWORD
|
easy,nonn
|
|
AUTHOR
|
Cino Hilliard (hillcino368(AT)gmail.com), Apr 07 2005
|
|
|
Search completed in 0.002 seconds
|
