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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A104242 Primes which are the concatenation of two consecutive square numbers. 0
6481, 144169, 324361, 400441, 784841, 16001681, 23042401, 67246889, 77447921, 84648649, 92169409, 96049801, 1254412769, 1638416641, 1742417689, 1960019881, 2016420449, 4752447961, 5382454289, 5664457121, 5760058081, 6051661009 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

EXAMPLE

The first term is 6481 which is a prime and is the concatenation of 64 and 81 which are two consecutive square numbers.

CROSSREFS

Sequence in context: A190012 A087351 A104343 * A031842 A028544 A049529

Adjacent sequences:  A104239 A104240 A104241 * A104243 A104244 A104245

KEYWORD

base,nonn

AUTHOR

Shyam Sunder Gupta (guptass(AT)rediffmail.com), Apr 17 2005

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

Content is available under The OEIS End-User License Agreement .

Last modified February 17 07:41 EST 2012. Contains 205998 sequences.