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 A273354 Least number that is the sum of 2 positive cubes in exactly n ways and also the sum of 2 positive squares in exactly n ways. 0
 2, 4624776 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS 4624776 is the first term of A272701. A011541(k) is not the sum of two nonzero squares for 2 <= k <= 6. If it exists, what is the a(3)? LINKS Table of n, a(n) for n=1..2. EXAMPLE a(1) = 2 because 2 = 1^3 + 1^3 = 1^2 + 1^2. a(2) = 4624776 because 4624776 = 51^3 + 165^3 = 72^3 + 162^3 = 1026^2 + 1890^2 = 1350^2 + 1674^2. CROSSREFS Cf. A001235, A011541, A016032, A272701. Sequence in context: A137601 A232962 A158347 * A352126 A157991 A233555 Adjacent sequences: A273351 A273352 A273353 * A273355 A273356 A273357 KEYWORD nonn,hard,less,more,bref AUTHOR Altug Alkan, May 20 2016 STATUS approved

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Last modified August 3 08:07 EDT 2024. Contains 374885 sequences. (Running on oeis4.)