1,10

Column 6 of A216645

Table of n, a(n) for n=1..21.

All solutions for n=11

..1....1

..2....2

..3....2

..4....2

..5....4

..6....7

..7....8

..8....9

..9....9

.10....9

.11...11

Sequence in context: A291444 A219795 A082602 * A187758 A171931 A221530

Adjacent sequences: A216641 A216642 A216643 * A216645 A216646 A216647

nonn

R. H. Hardin Sep 11 2012

approved