A004975 a(n) = ceiling(n*phi^20), where phi is the golden ratio, A001622.

0, 15127, 30254, 45381, 60508, 75635, 90762, 105889, 121016, 136143, 151270, 166397, 181524, 196651, 211778, 226905, 242032, 257159, 272286, 287413, 302540, 317667, 332794, 347921, 363048, 378175, 393302, 408429, 423556, 438683, 453810, 468937, 484064, 499191, 514318, 529445, 544572, 559699

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn

Comments

Not the same as A004955: a(n) != A004955(n) for n=7564. [Joerg Arndt, Sep 17 2013]

Links

• Tanya Khovanova, Non Recursions

Programs

Mathematica

With[{c=GoldenRatio^20},Ceiling[c*Range[0,40]]] (* Harvey P. Dale, Jul 17 2018 *)

Formula

a(n) >= A004955(n). [R. J. Mathar, Oct 28 2008]