The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A370824 a(n) are the denominators corresponding to A370823(n). 5
 1, 5, 19, 13, 211, 95, 2059, 1261, 19171, 5275, 7613, 1159, 1586131, 4766585, 14316139, 505661, 129009091, 2910965, 1161737179, 12675403, 10458256051, 1364211535, 2002867877, 620687383, 847255055011, 2541798719465, 7625463267259, 157769131169, 68629840493971, 86254737475 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS See A370823 for more information. LINKS Paolo Xausa, Table of n, a(n) for n = 1..1000 FORMULA Denominator of 2^(n-1)*(3^n-1)/(3^n-2^n). - Chai Wah Wu, Mar 07 2024 EXAMPLE A370823(n)/a(n) for n = 1..11: 2/1, 16/5, 104/19, 128/13, 3872/211, 3328/95, 139904/2059, 167936/1261, 5038592/19171, 2748416/5275, 7886848/7613. MATHEMATICA Array[Denominator[(3^#-1)/((3/2)^#-1)/2] &, 35] (* Paolo Xausa, Mar 13 2024 *) PROG (PARI) \\ See A370823 for functions a370823_4(n) denominator(a370823_4(n)) (Python) from math import gcd def A370824(n): return (a:=3**n-(1<

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified July 20 18:59 EDT 2024. Contains 374459 sequences. (Running on oeis4.)