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 A032512 Sum of the integer part of 4th roots of integers less than n. 6
 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, 43, 45, 47, 49, 51, 53, 55, 57, 59, 61, 63, 65, 67, 69, 71, 73, 75, 77, 79, 81, 83, 85, 87, 89, 91, 93, 95, 97, 99, 101, 103, 105, 107, 109, 111, 113, 115, 117, 119 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS FORMULA G.f.: Sum_{k>=1} x^(k^4)/(1 - x)^2. - Ilya Gutkovskiy, Dec 22 2016 PROG (PARI) a(n) = sum(k=1, n, sqrtnint(k, 4)); \\ Michel Marcus, Mar 12 2016 CROSSREFS Cf. A022554, A031876, A032513. Sequence in context: A097745 A032965 A033067 * A050723 A017908 A044965 Adjacent sequences:  A032509 A032510 A032511 * A032513 A032514 A032515 KEYWORD nonn AUTHOR Michel Tixier (tixier(AT)dyadel.net) STATUS approved

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Last modified September 16 12:41 EDT 2019. Contains 327113 sequences. (Running on oeis4.)