A342272 The rows of the triangle A170899 converge to this sequence.

0, 1, 2, 4, 4, 4, 8, 12, 8, 4, 8, 14, 18, 16, 20, 28, 16, 4, 8, 14, 18, 18, 26, 42, 42, 24, 20, 36, 50, 46, 50, 62, 32, 4, 8, 14, 18, 18, 26, 42, 42, 26, 26, 46, 66, 70, 74, 98, 90, 40, 20, 36, 50, 54, 70, 110, 126, 86, 58, 86, 124, 118, 118, 132

Offset

0,3

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.

A342273 is the limiting sequence for the part of the row of A170899 that start at the first "3".

Needs a bigger b-file.

Links

N. J. A. Sloane, Table of n, a(n) for n = 0..512

Crossrefs

Cf. A151723, A151724, A170899, A342273, A342274.

This is A169787 with 1 subtracted from each term.

Sequence in context: A220525 A160809 A139251 * A182635 A188346 A309690

Adjacent sequences: A342269 A342270 A342271 * A342273 A342274 A342275

Keyword

nonn

Author

N. J. A. Sloane, Mar 13 2021

Status

approved