A157032 Let d(i) be the i-th digit of the decimal expansion of phi=1.6180339887498948482045868...,so that d(0) = 1, d(1) = 6, d(2) = 1, etc. Then a(0) = 1, thereafter a(n) = d(d(n)).

1, 3, 6, 8, 1, 8, 8, 8, 8, 8, 9, 0, 8, 8, 8, 0, 8, 0, 8, 1, 1, 0, 3, 8, 3, 8, 8, 0, 8, 3, 3, 3, 8, 8, 6, 6, 9, 9, 1, 1, 8, 1, 8, 6, 9, 8, 8, 1, 3, 9, 3, 1, 8, 3, 1, 6, 8, 3, 0, 0, 8, 3, 1, 1, 9, 1, 3, 1, 3, 1, 0, 3, 1, 8, 6, 8, 8, 1, 1, 0, 0, 8, 9, 1, 9, 1, 1, 9, 1, 1, 0, 6, 8, 8, 8, 8, 6, 6, 8, 9, 0, 8, 0, 9, 3

Offset

0,2

Comments

This defines a constant 1.368188888908880808110383880... related to Phi in a peculiar way!

All digits are one of the first 10 digits of Phi = A001622, so 2, 4, 5 and 7 never appear. [From R. J. Mathar, Mar 14 2009]

Links

Table of n, a(n) for n=0..104.

Crossrefs

Cf. A135725, A155912

Sequence in context: A298907 A181909 A181917 * A295655 A339621 A254604

Adjacent sequences: A157029 A157030 A157031 * A157033 A157034 A157035

Keyword

nonn,base,easy

Author

Dan Brown (ddbhockey(AT)hotmail.com), Feb 21 2009

Extensions

More digits from R. J. Mathar, Mar 14 2009

Status

approved