The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A227525 Squares which can be represented as sum of a prime and its reverse in at least one way. 2
 4, 121, 625, 94249, 698896, 1517824, 5313025, 6325225, 6895876, 6948496, 7706176, 15665764, 63600625, 95199049, 170198116, 449948944, 522808225, 562069264, 1101576100, 1183979281, 1254505561, 1271564281, 1615718416, 4045214404, 9504885049, 10989328900 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Giovanni Resta, Table of n, a(n) for n = 1..56 (terms < 2*10^12) EXAMPLE 121=29+92 MATHEMATICA SquareQ[n_Integer?Positive] := IntegerQ[Sqrt[n]] ; Union[Select[ Table[ Prime[x] + FromDigits[ Reverse[ IntegerDigits[ Prime[x]]]], {x, 5761455}], SquareQ]] Select[Union[#+IntegerReverse[#]&/@Prime[Range[10^6]]], IntegerQ[Sqrt[#]]&] (* The program generates the first 12 terms of the sequence. *) (* Harvey P. Dale, Sep 14 2022 *) CROSSREFS Cf. A067030. Sequence in context: A017186 A355751 A098839 * A071129 A241366 A358570 Adjacent sequences: A227522 A227523 A227524 * A227526 A227527 A227528 KEYWORD nonn,base AUTHOR Shyam Sunder Gupta, Jul 14 2013 EXTENSIONS a(20)-a(26) from Giovanni Resta, Jul 18 2013 STATUS approved

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

Last modified April 21 07:21 EDT 2024. Contains 371850 sequences. (Running on oeis4.)