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 A138597 Odd numbers k such that Hamming weight of k equals Hamming weight of k^3. 2
 1, 56953, 1830651, 5502457, 130002327, 2941876987, 3479043677, 3674103727, 10601496029, 12739098539, 29928193915, 93415397243, 111392161401, 532403822507, 893286088059, 1039374483323 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS This sequence is A118655 without the trivial examples k*2^n. a(17) > 2^40. - Donovan Johnson, May 05 2012 LINKS Table of n, a(n) for n=1..16. FORMULA A000120(a(n)) = A000120(a(n)^3) with a(n) odd PROG (PARI) isok(k) = (k%2) && (hammingweight(k) == hammingweight(k^3)); \\ Michel Marcus, Jul 31 2023 CROSSREFS Cf. A000120, A118655. Cf. A363799 (Hamming weight(k) > Hamming weight(k^3)). Sequence in context: A145685 A333951 A292788 * A206758 A019290 A069335 Adjacent sequences: A138594 A138595 A138596 * A138598 A138599 A138600 KEYWORD nonn,base,more AUTHOR Martin Raab, May 13 2008 EXTENSIONS a(14)-a(16) from Donovan Johnson, May 05 2012 STATUS approved

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Last modified August 10 05:56 EDT 2024. Contains 375044 sequences. (Running on oeis4.)