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Subset of A116700
Table of n, a(n) for n=1..45.
"64" appears in ....44454"64"74849, ahead of its position after "63", so is a member.
Sequence in context: A045286 A057372 A057442 * A008435 A223083 A302169
Adjacent sequences: A141814 A141815 A141816 * A141818 A141819 A141820
Paolo P. Lava and Giorgio Balzarotti, Jul 08 2008