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A104262 Primes which are the concatenation of three consecutive square numbers. 2
149, 496481, 361400441, 202521162209, 562557765929, 624164006561, 98011000010201, 118811210012321, 198812016420449, 272252755627889, 342253459634969, 778417840078961, 789617952480089, 906019120491809 (list; graph; refs; listen; history; text; internal format)
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

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Last modified May 18 22:26 EDT 2021. Contains 344004 sequences. (Running on oeis4.)