15 May 2010

iad58: (Default)
А еще такая последовательность бывает:
a0 = a1 = 1, an = (a0² + a1² + … + an−1²) / (n−1).

This sequence continues 1 1 2 3 5 10 28 154 3520 1551880 …. Amazingly, a43 is the first term of this sequence that is not an integer.

(Amazingly, понимаете ли. That kind of Bear.)

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