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A244277 Rounded percent chance that n heads appear in 2n tosses of a fair coin. 0
50, 38, 31, 27, 25, 23, 21, 20, 19, 18, 17, 16, 15, 15, 14, 14, 14, 13, 13, 13, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

a(n) is also the largest percentage that k heads will appear face up in 2n tosses of a fair coin where k = 1, 2, ..., 2n.

LINKS

Table of n, a(n) for n=1..84.

FORMULA

a(n) = round(100*C(2n,n)/4^n).

MATHEMATICA

Table[Round[100*Binomial[2 n, n]/4^n], {n, 100}] (* Wesley Ivan Hurt, Jun 24 2014 *)

PROG

(PARI) for(n=1, 100, print1(round((100*(2*n)!)/((n!)^2*4^n)), ", "))

CROSSREFS

Sequence in context: A033980 A207149 A207142 * A248688 A291495 A207141

Adjacent sequences:  A244274 A244275 A244276 * A244278 A244279 A244280

KEYWORD

nonn

AUTHOR

Derek Orr, Jun 24 2014

STATUS

approved

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Last modified January 17 22:44 EST 2019. Contains 319251 sequences. (Running on oeis4.)