login
This site is supported by donations to The OEIS Foundation.

 

Logo

Annual Appeal: Please make a donation (tax deductible in USA) to keep the OEIS running. Over 5000 articles have referenced us, often saying "we discovered this result with the help of the OEIS".

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A072383 Primes which can be represented as the sum of a square and its reverse. 0
2, 101, 887, 1151, 32423, 33623, 36263, 38873, 72617, 73037, 78887, 79697, 82727, 87977, 94049, 96059, 96269, 99689, 112031, 114641, 117281, 119291, 122921, 126761, 136463, 178697, 1186811, 1239311, 1374731, 1537241, 1604951, 1615151 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..32.

EXAMPLE

887 is a term because it is prime and it is the sum of square 196 and its reverse 691.

MATHEMATICA

With[{nn=40}, Take[Union[Select[Table[n^2+FromDigits[Reverse[ IntegerDigits[ n^2]]], {n, 100nn}], PrimeQ]], nn]] (* Harvey P. Dale, Mar 01 2015 *)

CROSSREFS

Sequence in context: A088272 A125819 A179998 * A037053 A222449 A035325

Adjacent sequences:  A072380 A072381 A072382 * A072384 A072385 A072386

KEYWORD

base,nonn

AUTHOR

Shyam Sunder Gupta, Jul 20 2002

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified December 2 15:01 EST 2016. Contains 278678 sequences.