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What number comes next?

Look at the series (9, 73, 241, 561, 1081, 1849, ?), determine the pattern, and find the value of the next number!

Correct answers: 40

The first user who solved this task is Fazil Hashim.

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The best relationship I ever had -- I used to go out with a homeless girl. Yeah, it was great cause after sex, I could just drop her off anywhere.

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Claude-Louis Mathieu

Died 5 Mar 1875 at age 91 (born 25 Nov 1783).French astronomer and mathematician who worked particularly on the determination of the distances of the stars. He began his career as an engineer, but soon became a mathematician at the Bureau des Longitudes in 1817 and later professor of astronomy in Paris. For many years Claude Mathieu edited the work on population statistics L'Annuaire du Bureau des Longitudes produced by the Bureau des Longitudes. His work in astronomy focussed on determining the distances to stars. He published L'Histoire de l'astronomie au XVIII siècle in 1827.

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