1,1

A simple variation on this sequence could ignore the 3 before the decimal point, making a(1)=1 instead.

Dave Andersen, Pi-Search Page

Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.

a(4)=a(5)=a(6) = 9 because there are (exactly) six consecutive 9's occurring

with starting index A049522(4)=A049522(5)=A049522(6) = 763 and there are no

runs of 4, 5, 6, or more consecutive equal digits having a smaller starting

index. The first occurrence of a run of at least seven consecutive equal digits

occurs at starting index A049522(7) = 710101. The run consists of exactly

seven 3's so a(7) = 3 [=A084144(7)] and also A049523(7) = 710101.

Cf. A049522 (starting index), A084144 (consecutively exactly n times), A049523 (starting index for A084144 runs).

Sequence in context: A160332 A078033 A108075 this_sequence A122919 A157401 A143911

Adjacent sequences: A084142 A084143 A084144 this_sequence A084146 A084147 A084148

base,nonn

Rick L. Shepherd (rshepherd2(AT)hotmail.com), May 23 2003