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 A321667 (3/2) * n^(2/3) rounded to nearest integer. 2
 2, 2, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 10, 11, 11, 11, 12, 12, 12, 13, 13, 14, 14, 14, 14, 15, 15, 15, 16, 16, 16, 17, 17, 17, 18, 18, 18, 18, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 22, 22, 22, 22, 23, 23, 23, 23, 24, 24, 24, 24, 25, 25, 25, 25, 26, 26, 26, 26, 27 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS This is an approximation to the solution of the "Concrete Math Club" casino problem given in A079631. REFERENCES R. L. Graham, D. E. Knuth and O. Patashnik, Concrete Mathematics. 2nd Edition. Addison-Wesley, Reading, MA, 1994. Section 3.2, pp. 74-76. LINKS Hugo Pfoertner, Table of n, a(n) for n = 1..10000 MATHEMATICA a[n_]:=Round[(3/2)*n^(2/3)]; Array[a, 50] (* Stefano Spezia, Nov 16 2018 *) PROG (PARI) for(j=1, 75, print1(round(1.5*j^(2/3)), ", ")) (Python) for n in range(1, 50): print(round((3/2)*n**(2/3)), end=', ') # Stefano Spezia, Nov 16 2018 CROSSREFS Cf. A079631. Sequence in context: A194177 A023190 A047783 * A194212 A194208 A057358 Adjacent sequences:  A321664 A321665 A321666 * A321668 A321669 A321670 KEYWORD nonn,easy AUTHOR Hugo Pfoertner, Nov 16 2018 STATUS approved

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Last modified September 20 00:33 EDT 2020. Contains 337216 sequences. (Running on oeis4.)