A197764 Ceiling((4n+1/n)^n).

5, 73, 1877, 69730, 3363233, 199205127, 13982257729, 1134344816185, 104416147080712, 10750872867074587, 1224163955433850944, 152733676280699540999, 20719969553916698313305, 3036565789908881887393114, 478082645334119488823777215, 80475210949356295594385157621

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

PARI

a(n)=ceil((4*n+1/n)^n) \\ Charles R Greathouse IV, Nov 21 2011