A381929 Ending positions of runs in the regular paperfolding sequence A034947.

2, 3, 5, 7, 10, 12, 13, 15, 18, 19, 21, 24, 26, 28, 29, 31, 34, 35, 37, 39, 42, 44, 45, 48, 50, 51, 53, 56, 58, 60, 61, 63, 66, 67, 69, 71, 74, 76, 77, 79, 82, 83, 85, 88, 90, 92, 93, 96, 98, 99, 101, 103, 106, 108, 109, 112, 114, 115, 117, 120, 122, 124, 125

Offset: 1

Author

Jeffrey Shallit, Mar 10 2025

Keywords

• nonn

Comments

A "run" is a maximal block of consecutive identical terms.

Examples

			The first few terms of A034947 are 1,1,-1,1,1,-1,-1,1,1,1,-1, and the runs end at positions 2,3,5,7,10,... .
		

Links

• Martin Bunder, Bruce Bates, and Stephen Arnold, The summed paperfolding sequence, Bull. Aust. Math. Soc. 110 (2024), 189-198.
• Jeffrey Shallit, Runs in Paperfolding Sequences, arXiv:2412.17930 [math.CO], 2024.

Crossrefs

Cf. A034947. A371594 gives the starting positions of the runs, and A088431 gives the length of the runs.