%I #15 Dec 28 2019 14:27:55

%S 5,44,2949,17988,19446,762,1722776,36356642,564665206,20148132310,

%T 27014073304,897831316556,10542036048450,5758910552709

%N Position of the first occurrence of exactly n consecutive '9's in a row in the decimal expansion of Pi.

%H David G. Andersen, <a href="http://www.angio.net/pi/piquery">The Pi-Search Page</a>.

%H Yasumasa Kanada, <a href="http://www.super-computing.org/pi-decimal_current.html">Statistical Distribution Information</a>, Home Page, Computer Centre, The University of Tokyo.

%H PI-world Site, <a href="https://web.archive.org/web/20140130074648/http://piworld.calico.jp/epidigits.html">The digits and Statistics for 12 trillion digits of PI</a> [archived page]

%Y Cf. A000796: Decimal expansion (or digits) of Pi.

%Y First occurrence of n times the same digit: A035117 (n '1's), A050281 (n '2's), A050282, A050283, A050284, A050286, A050287, A048940 (n '9's).

%Y First occurrence of exactly n times the same digit: A096755 (exactly n '1's), A096756, A096757, A096758, A096759, A096760, A096761, A096762, A096763 (exactly n '9's), A050279 (exactly n '0's).

%Y First occurrence of n: A176341; of concatenate(1,...,n): A121280 = A068987 - 1.

%K nonn,base,more

%O 1,1

%A _Robert G. Wilson v_, Jul 07 2004

%E a(10)-a(11) from _Giovanni Resta_, Sep 30 2019

%E a(12) from Yasumasa Kanada, 2002 and a(13)-a(14) from Shigeru Kondo, 2011, added by _Dmitry Petukhov_, Dec 27 2019