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 A164343 A positive integer is included if it is a square that contains the same number of 0's as 1's when represented in binary. 5
 9, 49, 169, 225, 625, 841, 961, 2916, 3249, 3721, 3969, 10609, 12100, 12769, 13924, 14641, 15625, 16129, 39601, 41209, 42849, 44944, 45369, 45796, 47524, 52900, 56644, 58081, 60516, 62001, 64009, 65025, 151321, 154449, 155236, 156025, 161604, 163216, 167281 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Michael S. Branicky, Table of n, a(n) for n = 1..10000 (terms 1..1000 from Harvey P. Dale) MATHEMATICA Select[Range[500]^2, DigitCount[#, 2, 1]==DigitCount[#, 2, 0]&] (* Harvey P. Dale, Nov 18 2014 *) PROG (Python) def bal(n): return n and n.bit_length() == n.bit_count() * 2 print([s for s in (k*k for k in range(403)) if bal(s)]) # Michael S. Branicky, Jul 12 2022 CROSSREFS Cf. A031443, A164344. Sequence in context: A014730 A212503 A295019 * A273374 A020245 A082608 Adjacent sequences: A164340 A164341 A164342 * A164344 A164345 A164346 KEYWORD base,nonn AUTHOR Leroy Quet, Aug 13 2009 EXTENSIONS More terms from Sean A. Irvine, Oct 08 2009 STATUS approved

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Last modified September 9 20:39 EDT 2024. Contains 375765 sequences. (Running on oeis4.)