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 A160711 Cyclops squares: squares (A000290) that are also cyclops numbers (A134808). 12
 0, 11025, 19044, 21025, 24025, 32041, 38025, 42025, 47089, 51076, 58081, 59049, 65025, 66049, 67081, 75076, 87025, 93025, 1110916, 1140624, 1170724, 1190281, 1240996, 1270129, 1290496, 1340964, 1350244, 1380625, 1420864, 1430416 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Kenny Lau, Table of n, a(n) for n = 1..20001 EXAMPLE 19044 is in the sequence because it is a square (138^2) and is also a cyclops number (odd number of digits, middle digit is the only zero). 11025 is in the sequence because it is a square (105^2) and is also a cyclops number (odd number of digits, middle digit is the only zero). - Michael B. Porter, Jul 09 2016 MATHEMATICA Select[Range[0, 1200]^2, And[OddQ@ Length@ #, #[[Ceiling[Length[#]/2]]] == 0, Count[#, 0] == 1] &@ IntegerDigits@ # &] (* Michael De Vlieger, Jul 08 2016 *) cnQ[n_]:=Module[{len=IntegerLength[n]}, OddQ[len]&&DigitCount[n, 10, 0]==1 && IntegerDigits[n][[(len+1)/2]]==0]; Join[{0}, Select[Range[1200]^2, cnQ]] (* Harvey P. Dale, Mar 19 2018 *) CROSSREFS Cf. A000290, A134808, A134809, A134148, A138131, A153806, A160712, A160717, A239828. Sequence in context: A096930 A233720 A285845 * A129087 A239828 A156942 Adjacent sequences: A160708 A160709 A160710 * A160712 A160713 A160714 KEYWORD base,easy,nonn AUTHOR Omar E. Pol, Jun 08 2009 STATUS approved

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Last modified May 29 04:03 EDT 2023. Contains 363029 sequences. (Running on oeis4.)