A197717 a(n) = ceiling((3n+1/n)^n).

4, 43, 814, 22519, 811369, 35946076, 1888624972, 114746269758, 7912720985080, 610470884770407, 52094956940751711, 4871691779130290167, 495409898474358881327, 54427906182810588386674, 6424384909407981686846706, 810777549111969648699638307, 108944087230453697240059783284

Offset: 1

Author

Vincenzo Librandi, Oct 18 2011

Keywords

• nonn
• less

Links

• Vincenzo Librandi, Table of n, a(n) for n = 1..300

Crossrefs

Cf. A014058.

Programs

Magma

[Ceiling((3*n+1/n)^n): n in [1..20]]

Mathematica

Table[Ceiling[(3n+1/n)^n],{n,20}] (* Harvey P. Dale, Mar 04 2023 *)

PARI

a(n)=ceil((3*n+1/n)^n) \\ Charles R Greathouse IV, Nov 21 2011