OFFSET
1,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..300
R. J. Penrose, Puzzle, Twistor Newsletter, No. 10 (July 1980), p. 22.
R. J. Penrose, Puzzle, Twistor Newsletter, No. 10 (July 1980), p. 22. [Cached copy]
R. J. Penrose, Solution to puzzle, Twistor Newsletter, No. 41, p. 37, 1996.
R. J. Penrose, Solution to puzzle, Twistor Newsletter, No. 41, p. 37, 1996. [Cached copy]
MATHEMATICA
a[n_] := Floor[24*(2^n-1)/n]; Array[a, 30] (* Giovanni Resta, Mar 25 2017 *)
PROG
(Magma) [Floor(24*(2^n-1)/n): n in [1..45]]; // Vincenzo Librandi, May 08 2011
(Python)
def A003176(n): return ((3<<n+3)-24)//n # Chai Wah Wu, Aug 24 2023
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved