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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

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A323180 Row sums of A323179.

Original entry on oeis.org

1, 3, 4, 9, 9, 22, 17, 44, 36, 80, 73, 138, 149, 279, 264, 467, 575, 771, 980, 1570, 1868, 2184, 3493, 4288, 6512, 7156, 11766, 13609, 21452, 21526, 38880, 44374, 53328, 77009, 90383, 175886, 126597, 222489, 323328, 416581, 622641, 570846
Offset: 0

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Author

Nathan M Epstein, Jan 10 2019

Keywords

Comments

Sums of triangle rows of the rule 30 automaton, in which the execution of the rule has been modified as such:
In the rule 30 CA, local cell neighborhoods are converted into a number 0-7, which is then used to determine if the central cell will be active in the next generation of the CA.
For this version, when determining this local neighborhood number, any positive nonzero value is treated as a Boolean TRUE. 0 values operate the same way as the conventional version of rule 30.
For example: [0],[0],[14] becomes [False],[False],[True] for the purposes of determining the local state.
Second, instead of writing a 1 when instructed by the 8 sub-rules, instead write the sum of the three local cells.

Examples

			Triangle begins:             sum
.             1               1
.          1, 1, 1            3
.       1, 2, 0, 0, 1         4
.    1, 3, 0, 2, 1, 1, 1      9
. 1, 4, 0, 0, 3, 0, 0, 0, 1   9

Crossrefs

Cf. A323179.
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