A161209 a(n) = A161207(n+1)/2.

1, 2, 3, 4, 5, 6, 7, 6, 6, 9, 12, 15, 15, 14, 15, 10, 6, 9, 13, 17, 21, 25, 28, 27, 22, 24, 32, 41, 40, 34, 33, 18, 6, 9, 13, 17, 21, 25, 29, 29, 27, 33, 45, 57, 63, 61, 60, 51, 30, 24, 35, 47, 59, 71, 80, 81, 68, 65, 80, 102, 99, 80, 71, 34, 6

Offset: 1

Author

Omar E. Pol, Jun 08 2009

Keywords

• nonn
• more

Crossrefs

Cf. A161206, A161207, A161208.

Extensions

More terms from Jinyuan Wang, Mar 01 2020