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 A158028 Square numbers s such that all the digits needed to write the consecutive square numbers from 0 to s fill exactly a square (no holes, no overlaps). 1
 0, 9, 81, 144, 400, 625, 15625, 17956, 30276, 34225, 54289, 60516, 91204, 1113025, 1478656, 1934881, 2496400, 3179089, 4000000, 4977361, 6130576, 7480225, 9048064, 1009205824, 1063281664, 1077152400, 1134072976, 1148667664 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS The sides of the successive squares are given by A158029. Terms computed by Jean-Marc Falcoz. LINKS Table of n, a(n) for n=1..28. 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 square numbers fitting exactly in the SE corner of the above squares are 0, 9, 81, 144. There is no 3x3 square where this is possible. CROSSREFS Sequence in context: A208502 A175370 A207695 * A207591 A207924 A343134 Adjacent sequences: A158025 A158026 A158027 * A158029 A158030 A158031 KEYWORD base,nonn AUTHOR Eric Angelini, Mar 11 2009 STATUS approved

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Last modified May 31 19:08 EDT 2023. Contains 363068 sequences. (Running on oeis4.)