A383194 The least number of times that b(k) = 2*k - 1 for the first n terms of a "mean-central" sequence, as is defined in A383192.

1, 1, 2, 2, 3, 4, 4, 4, 4, 4, 5, 5, 6, 6, 6, 6, 7, 7, 7, 8, 8, 8, 9, 10, 10, 10, 10, 10, 11, 11

Offset: 1

Author

Yifan Xie, Apr 21 2025

Keywords

• nonn
• more

Comments

Problem 2 of the 2025 European Girls' Mathematical Olympiad implies that a(n) -> oo as n -> oo.

Links

• Art of Problem Solving, European Girls' Mathematical Olympiad 2025 Problem 2
• Yifan Xie, Python program

Crossrefs

Cf. A383192, A383193.