This site is supported by donations to The OEIS Foundation.

 Annual Appeal: Please make a donation to keep the OEIS running. In 2018 we replaced the server with a faster one, added 20000 new sequences, and reached 7000 citations (often saying "discovered thanks to the OEIS"). Other ways to donate

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A122541 Squares that can be seen on a digital clock. 0
 0, 1, 4, 9, 16, 25, 36, 49, 100, 121, 144, 225, 256, 324, 400, 441, 529, 625, 729, 841, 900, 1024, 1156, 1225, 1444, 1521, 1600, 1849, 1936, 2025, 2116, 2209, 2304 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS The smallest and the largest numbers seen on a digital clock are 0 and 2359 respectively. The number that comes immediately after 59 is 100, so that you never see 64, 81 or 169. LINKS MATHEMATICA Select[ Table[100hr + mnt, {hr, 0, 23}, {mnt, 0, 59}] // Flatten, IntegerQ@ Sqrt@# &] (* Robert G. Wilson v Sep 20 2006 *) CROSSREFS Sequence in context: A030152 A030288 A030154 * A133743 A235484 A028820 Adjacent sequences:  A122538 A122539 A122540 * A122542 A122543 A122544 KEYWORD nonn,fini,full,base AUTHOR Hassan Taifour (hytaifour(AT)yahoo.co.uk), Sep 19 2006 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified December 16 19:57 EST 2018. Contains 318188 sequences. (Running on oeis4.)