A182257 Denominators of Egyptian fraction expansion of Pi.

1, 1, 1, 8, 61, 5020, 128541455, 162924332716605980, 28783052231699298507846309644849796, 871295615653899563300996782209332544845605756266650946342214549769447

Offset

0,4

Comments

Included for completeness. A001466 is the main entry.

Links

Table of n, a(n) for n=0..9.

Mathematica

lst={}; k=N[(Pi), 1000]; Do[s=Ceiling[1/k]; AppendTo[lst, s]; k=k-1/s, {n, 12}]; lst (* based on the Mma program from Vladimir Joseph Stephan Orlovsky in A001466 *)

Prog

(PARI) localprec(200); my(v=Pi, d); vector(10, i, v-=1/(d=ceil(1/v)); d) \\ Ruud H.G. van Tol, May 29 2025 (use prec.1200 for 13 terms)

Crossrefs

Cf. A001466, A224230.

Sequence in context: A080525 A362944 A001466 * A082179 A114028 A044527

Adjacent sequences: A182254 A182255 A182256 * A182258 A182259 A182260

Keyword

nonn

Author

N. J. A. Sloane, Apr 21 2012

Status

approved