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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A116309 Numbers n such that n times n+3 gives the concatenation of two numbers m and m+3. 5
40, 58, 32262232, 67737766, 79321056, 3341093417798787499093, 3861488851737861033961, 4747922651210186579787, 5252077348789813420211, 6138511148262138966037, 6658906582201212500905, 7232275368591793618231 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

EXAMPLE

79321056 * 79321059 = 62918301//62918304, where // denotes concatenation.

CROSSREFS

Cf. A116112, A116302, A116308, A116310, A116316.

Sequence in context: A108607 A109730 A100333 * A126816 A035120 A094619

Adjacent sequences:  A116306 A116307 A116308 * A116310 A116311 A116312

KEYWORD

nonn,base

AUTHOR

Giovanni Resta (g.resta(AT)iit.cnr.it), Feb 06 2006

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 15 23:53 EST 2012. Contains 205860 sequences.