A104262 Primes which are the concatenation of three consecutive square numbers.

149, 496481, 361400441, 202521162209, 562557765929, 624164006561, 98011000010201, 118811210012321, 198812016420449, 272252755627889, 342253459634969, 778417840078961, 789617952480089, 906019120491809

Offset

1,1

Links

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Example

The first term is 149 which is a prime and is the concatenation of 1,4 and 9 which are three consecutive square numbers.

Mathematica

c3sn[{a_, b_, c_}]:=FromDigits[Flatten[IntegerDigits/@{a, b, c}]]; Select[ c3sn/@ Partition[Range[400]^2, 3, 1], PrimeQ] (* Harvey P. Dale, Mar 13 2019 *)

Crossrefs

Sequence in context: A188753 A188873 A215689 * A048706 A054729 A116185

Adjacent sequences: A104259 A104260 A104261 * A104263 A104264 A104265

Keyword

base,nonn

Author

Shyam Sunder Gupta, Apr 17 2005

Status

approved