A342278 - OEIS

A342278

First differences of A342274.

4, 6, 4, 0, 8, 16, 0, -16, 0, 20, 20, 4, 4, 24, -8, -48, -16, 20, 20, 8, 16, 48, 32, -36, -44, 24, 60, 20, 0, 32, -36, -116, -48, 20, 20, 8, 16, 48, 32, -32, -32, 40, 80, 48, 16, 56, 32, -116, -140, -8, 60, 36, 40, 112, 112, -48, -136, 0, 132, 64, -12, 28, -108, -256, -112, 20, 20, 8, 16, 48, 32

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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, A342274.

Sequence in context: A227436 A023901 A247669 * A173678 A219234 A350481

Adjacent sequences: A342275 A342276 A342277 * A342279 A342280 A342281

KEYWORD

sign

AUTHOR

N. J. A. Sloane, Mar 14 2021

STATUS

approved