AT-1 Explain

Explain this data

The shortest program that reproduces a sequence isits explanation. AT-1 searches a program space in description-length order and returns the exact generator as a human-readable one-liner — verified on every term, shorter than the data. When no rule fits, it says so, rather than inventing one.

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x[n+2]=…: recovers recurrences, affine, polynomial, periodic rules
verified: solved on a prefix, checked on every remaining term
MDL win: the program is shorter than the data it explains
refuses noise: no rule? it says NO_GENERATOR — no false explanations

at1 explain fibonacci.txt
#   AT-1 Explain: x[n+2] = 1*x[n+1] + 1*x[n], x[0]=0, x[1]=1
#   verified on all 13 terms; program is shorter than the data.
at1 explain random-noise.txt
#   NO_GENERATOR: no rule explains all terms.

Scope. This is the fast, readable answer over integer sequences (constant, affine, quadratic, periodic, linear recurrences). For a byte-exact, self-contained regenerator container over richer generators, use AT-1 Discover.

Billed per explanation — first 5,000/month free. See pricing.