A190572 A189685/2.

6, 8, 9, 10, 10, 11, 11, 12, 12, 13, 14, 14, 15, 15, 16, 16, 16, 17, 18, 19, 20, 20, 21, 22, 22, 22, 22, 23, 23, 24, 24, 24, 25, 25, 26, 26, 26, 26, 27, 27, 27, 28, 28, 28, 29, 29, 29, 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, 33, 33, 34, 34, 34, 34, 35, 35, 35

Offset: 1

Author

Jonathan Sondow, May 12 2011

Keywords

• nonn

Formula

a(n) = A189683(2n)/2