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Numbers with distinct digits appearing in partition of decimal expansion of Pi.
25

%I #8 Mar 31 2012 10:24:25

%S 314,15926,53,5897,932,38462,643,38,327950,28,84197,1693,9,937510,

%T 5820974,94,4592307816,40628,62089,9862,8034,82534,21,1706,798214,80,

%U 865132,82306,6470938,4,46095,50,582,2317,253,5940812,84,81,1,1745028

%N Numbers with distinct digits appearing in partition of decimal expansion of Pi.

%C Start with decimal expansion of Pi: 3,1,4,1,5,9,2,6,5,3,5,8,9,7,9,3,2,3,8,4,6,2,6,4,3... Part the sequence to the sections with distinct digits: s={3,1,4},{1,5,9,2,6},{5,3},{5,8,9,7},{9,3,2},{3,8,4,6,2},{6,4,3},... Then A104819(n) = number from digits of s(n): 314,15926,53,5897,932,38462,643,... Leading zero allowed as at first in a(42)= 193852 from {0,1,9,3,8,5,2}.

%Y Cf. A104807, A104820.

%K nonn,base

%O 1,1

%A _Zak Seidov_, Mar 27 2005

%E Comment from _Jani Melik_, Nov 13 2009