A277574 (1/2)*A277570.
2, 5, 8, 11, 12, 14, 17, 20, 23, 26, 29, 30, 32, 35, 38, 41, 44, 47, 48, 50, 53, 56, 59, 62, 65, 66, 68, 71, 72, 74, 77, 80, 83, 84, 86, 89, 92, 95, 98, 101, 102, 104, 107, 110, 113, 116, 119, 120, 122, 125, 128, 131, 134, 137, 138, 140, 143, 146, 149, 152
Offset: 1
Links
- Clark Kimberling, Table of n, a(n) for n = 1..10000