A117510 Index (sum) of first Orloj clock sequence containing n.

1, 3, 7, 11, 19, 21, 35, 63, 45, 95, 99, 93, 119, 105, 165, 429, 273, 285, 581, 385, 345, 495, 749, 651, 665, 1001, 693, 1155, 1197, 1155, 1287, 1463, 693, 1935, 1659, 2331, 2145, 1995, 2915, 2415, 3399, 2115, 4785, 3157, 3519, 5225, 5481, 2871, 5115, 6045

Offset: 1

Author

Franklin T. Adams-Watters, Apr 26 2006

Keywords

• nonn

Comments

a(n) >= n(n+1)/2. This is equality for n = 1,2,6,9,14. Are there any others?

Crossrefs

Cf. A118382.