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 A048428 a(n)^2 is a square composed of three '2 digit' overlapping subsquares. 1
 475, 144003, 180275, 684475, 940046, 2593211, 4750782, 4753125, 9600192, 10400192, 14600128, 15002385, 15400128, 25005012, 25005414, 39529017, 66466485, 85002046, 91390165, 119600016, 120400016, 145002533, 180027625, 194001555, 196000703, 269400016, 270600016 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Subsquares with leading and/or trailing zeros not included. Subsquares must be at least 3 digits long. Solutions n........a(n)....A048427(n) annotated 1.........475................2{256}25 2......144003.........207{36}8{64}009 3......180275.........32{49}907{56}25 4......684475..........4685060{256}25 5......940046........88{36}8{64}82116 6.....2593211.......67{24}743{29}0521 7.....4750782......2{25}69929{61}1524 8.....4753125......2{25}9{21}97265625 9.....9600192......92{16}36864{36}864 10...10400192.....108{16}39936{36}864 11...14600128.....213{16}37376{16}384 12...15002385.....2{25}07155{56}88225 13...15400128.....237{16}39424{16}384 14...25005012.....6{25}2506{25}120144 15...25005414.....6{25}2707{29}311396 16...39529017....156{25}4318{49}86289 17...66466485....4{41}779{36}28255225 18...85002046....72{25}34782{41}86116 19...91390165....835{21}62{25}8727225 20..119600016...14304{16}3827200{25}6 21..120400016...14496{16}3852800{25}6 22..145002533...210{25}73457{64}16089 23..180027625...3{24}09945{76}3140625 24..194001555...376{36}60334{24}18025 25..196000703...384{16}275576{49}4209 26..269400016...72576{36}8620800{25}6 27..270600016...73224{36}8659200{25}6 28..294000702...864{36}412776{49}2804 29..312433184...9761{44}9{44}64377856 30..320016025..10{24}10256{25}6800625 - Lars Blomberg, May 17 2015 LINKS EXAMPLE 180275^2 = 32499075625 = 32{49}907{56}25; 3249 and 4990756 and 5625 = 57^2 and 2234^2 and 75^2. CROSSREFS Cf. A048427. Sequence in context: A252518 A210048 A263705 * A253395 A171077 A234077 Adjacent sequences:  A048425 A048426 A048427 * A048429 A048430 A048431 KEYWORD nonn,base AUTHOR Patrick De Geest, Apr 15 1999 EXTENSIONS Changed offset to 1 and a(7)-a(27) from Lars Blomberg, May 17 2015 STATUS approved

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Last modified October 27 06:09 EDT 2020. Contains 338035 sequences. (Running on oeis4.)