1,1

The sequence is much more irregular than suggested by a naive investigation of the first few blocks of 10 digits each.

Table of n, a(n) for n=1..105.

read("transforms3") : L := BFILETOLIST("b064413.txt") : L13 := [] : for i from 1 to nops(L) do if op(i, L) mod 13 = 0 then L13 := [op(L13), op(i, L) mod 10 ] ; fi; od: op(1..120, L13) ; # R. J. Mathar, Sep 07 2009

Cf. A010879 (final digit), A158605.

Sequence in context: A153632 A308170 A197511 * A021065 A262041 A243152

Adjacent sequences: A158603 A158604 A158605 * A158607 A158608 A158609

nonn,base

Paul Curtz, Mar 22 2009

Edited and extended by R. J. Mathar, Sep 07 2009

approved