A255045 a(n) = (1 + A160552(n))/2.

1, 1, 2, 1, 2, 3, 4, 1, 2, 3, 4, 3, 6, 9, 8, 1, 2, 3, 4, 3, 6, 9, 8, 3, 6, 9, 10, 11, 20, 25, 16, 1, 2, 3, 4, 3, 6, 9, 8, 3, 6, 9, 10, 11, 20, 25, 16, 3, 6, 9, 10, 11, 20, 25, 18, 11, 20, 27, 30, 41, 64, 65, 32, 1, 2, 3, 4, 3, 6, 9, 8, 3, 6, 9, 10, 11, 20, 25, 16, 3, 6, 9, 10, 11, 20, 25, 18, 11, 20, 27, 30, 41, 64, 65, 32, 3, 6, 9, 10, 11, 20, 25, 18

Offset

1,3

Comments

Triangle of numbers related to cellular automata.

It appears that this is also a triangle read by rows in which row n lists the first 2^(n-1) terms of A255046, with n >= 1.

Links

Table of n, a(n) for n=1..103.

Index entries for sequences related to cellular automata

Example

Written as an irregular triangle in which the length of row j is 2^j, j >= 0, the sequence begins:
1;
1,2;
1,2,3,4;
1,2,3,4,3,6,9,8;
1,2,3,4,3,6,9,8,3,6,9,10,11,20,25,16;
1,2,3,4,3,6,9,8,3,6,9,10,11,20,25,16,3,6,9,10,11,20,25,18,11,20,27,30,41,64,65,32;
...
It appears that the right border gives A000079.
It appears that the row sums give A007582.
It appears that rows converge to A255046.

Crossrefs

Cf. A000079, A007582, A139251, A151548, A160552, A169708, A255046, A255049.

Sequence in context: A075425 A330960 A327189 * A194103 A074294 A168265

Adjacent sequences: A255042 A255043 A255044 * A255046 A255047 A255048

Keyword

nonn,tabf

Author

Omar E. Pol, Feb 13 2015

Status

approved