A247385 Erroneous decimal expansion (or digits) of Pi engraved in the wall of the Robertson Tunnel at the Washington Park (MAX station), Portland, Oregon. The digits displayed are digits 1-11, 102-111, 202-211, 302-311, 402-411, 502-511, 602-611, 702-711, 802-811, 902-911, 12-17.

3, 1, 4, 1, 5, 9, 2, 6, 5, 3, 5, 8, 2, 1, 4, 8, 0, 8, 6, 5, 1, 4, 4, 2, 8, 8, 1, 0, 9, 7, 5, 7, 2, 4, 5, 8, 7, 0, 0, 6, 6, 3, 3, 0, 5, 7, 2, 7, 0, 3, 6, 9, 8, 3, 3, 6, 7, 3, 3, 6, 2, 0, 0, 0, 5, 6, 8, 1, 2, 7, 1, 4, 2, 0, 1, 9, 9, 5, 6, 1, 1, 5, 0, 2, 4, 4, 5, 9, 4, 5, 5, 5, 9, 8, 2, 5, 3, 4, 9, 0, 4, 8, 9, 7, 9, 3, 2

Offset

1,1

Comments

This sequence begins with 3, the first digit of Pi. The rest of the sequence is the result of organizing the next 1000 digits of Pi in groups of 10, starting a new line after each 10 groups, and then reading the digits of the first resulting column followed by the first six digits from the second. In the engraving, the characters are arranged in a 12 X 9 grid, with the decimal point counting as one of the 108 characters.

Links

Table of n, a(n) for n=1..107.

Mark Dominus, Why it was the wrong pi

Portland Light Rail, The Robertson Tunnel

Wikipedia, Washington Park (MAX Station)

Mathematica

RealDigits[Pi, 10, 911][[1, Join[{1}, Join@@(Range[100#+2, 100#+11]&/@Range[0, 9]), Range[12, 17]]]]

Crossrefs

Cf. A000796 (decimal expansion of Pi).

Sequence in context: A216548 A087478 A328927 * A253214 A112602 A000796

Adjacent sequences: A247382 A247383 A247384 * A247386 A247387 A247388

Keyword

nonn,cons

Author

Jared Ziegler, Sep 15 2014

Status

approved