A072383 Primes which can be represented as the sum of a square and its reverse.

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

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 A300102 A222449

Adjacent sequences: A072380 A072381 A072382 * A072384 A072385 A072386

Keyword

base,nonn

Author

Shyam Sunder Gupta, Jul 20 2002

Status

approved