This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A158029 Sides of squares which are filled exactly (no holes, no overlaps) by the digits needed to write a subsequence of consecutive square numbers, starting with 0. 1
 1, 2, 4, 5, 7, 8, 22, 23, 27, 28, 32, 33, 37, 77, 84, 91, 98, 105, 112, 119, 126, 133, 140, 521, 529, 531, 539, 541, 549, 551, 559, 561, 569, 571, 579, 581, 589, 591, 599, 601, 609, 611, 619, 621, 629, 631, 639, 641, 649, 651, 659, 661, 669, 671 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS The square numbers fitting exactly in a "squares-digits square" are given by A158028. Terms computed by Jean-Marc Falcoz. LINKS Eric Angelini, Digit Spiral E. Angelini, Digit Spiral [Cached copy, with permission] EXAMPLE ...0...01...0116...01161 .......49...4964...49640 ............2539...25390 ............6481...64811 ...................21144 The above squares, filled exactly by a subsequence of consecutive square numbers starting with 0 have sides 1, 2, 4, 5. There is no side-3 square with this property. The next properly filled square will have side 7. CROSSREFS Sequence in context: A141493 A103118 A262969 * A217378 A140204 A084577 Adjacent sequences:  A158026 A158027 A158028 * A158030 A158031 A158032 KEYWORD base,nonn AUTHOR Eric Angelini, Mar 11 2009 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 May 20 03:10 EDT 2019. Contains 323412 sequences. (Running on oeis4.)