A342277 First differences of A342273.

3, 5, 2, 0, 8, 12, -4, -12, 4, 16, 14, 0, 6, 20, -16, -36, -4, 16, 14, 4, 16, 40, 16, -36, -26, 28, 44, 6, 4, 28, -48, -86, -20, 16, 14, 4, 16, 40, 16, -32, -16, 40, 60, 28, 12, 52, 8, -108, -90, 12, 44, 22, 36, 96, 72, -64, -96, 28, 104, 26, -6, 28, -122, -188, -52, 16, 14, 4, 16, 40, 16, -32

Offset

0,1

Comments

It would be nice to have a formula or recurrence for any of A170899, A342272-A342278, or any nontrivial relation between them. This might help to understand the fractal structure of the mysterious hexagonal Ulam-Warburton cellular automaton A151723.

Links

N. J. A. Sloane, Table of n, a(n) for n = 0..254

Crossrefs

Cf. A151723, A342273.

Sequence in context: A220110 A327693 A240752 * A327396 A021288 A140735

Adjacent sequences: A342274 A342275 A342276 * A342278 A342279 A342280

Keyword

sign

Author

N. J. A. Sloane, Mar 14 2021

Status

approved