|
| |
|
|
A054266
|
|
Sum of composite numbers between prime p and nextprime(p) is palindromic.
|
|
5
| |
|
|
3, 5, 109, 193, 281, 509, 661, 827, 857, 1439, 2111, 3433, 3889, 3967, 4549, 6661, 7001, 8467, 10099, 17203, 18583, 21011, 21611, 23831, 24847, 25117, 26261, 26497, 26861, 28181, 29587, 30497, 31307, 47569, 47869, 49789, 53939, 54139, 66361
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,1
|
|
|
LINKS
| P. De Geest, World!Of Numbers
Zak Seidov, Table of n, a(n) for n = 1..500
|
|
|
EXAMPLE
| a(4)=193 since between 193 and next prime 197 we get the palindromic sum 194 + 195 + 196 = 585.
|
|
|
MATHEMATICA
| okQ[l_]:=Module[{x=IntegerDigits[Total[Range[First[l]+1, Last[l]-1]]]}, x==Reverse[x]]; Transpose[Select[Partition[ Prime[Range[2, 6700]], 2, 1], okQ]][[1]] (* From Harvey P. Dale, Mar 18 2011 *)
|
|
|
CROSSREFS
| Cf. A046933, A054264, A054265, A054267, A054268.
Sequence in context: A103081 A003112 A130187 * A054268 A153137 A105526
Adjacent sequences: A054263 A054264 A054265 * A054267 A054268 A054269
|
|
|
KEYWORD
| nonn,base
|
|
|
AUTHOR
| Patrick De Geest (pdg(AT)worldofnumbers.com), Apr 15 2000.
|
| |
|
|
