A179121 Variant of Sylvester's sequence: a(n + 1) = a(n)^2 - a(n) + 1, with a(1) = 18.
18, 307, 93943, 8825193307, 77884036897092402943, 6065923203387650816975131277148782658307, 36795424309396699379852983331957135547989414580911143782409880284213748733447943
Offset: 1
Keywords
References
- Mohammad K. Azarian, Sylvester's Sequence and the Infinite Egyptian Fraction Decomposition of 1, Problem 958, College Mathematics Journal, Vol. 42, No. 4, September 2011, p. 330. Solution published in Vol. 43, No. 4, September 2012, pp. 340-342
Links
- Markus Tervooren, Factorizations of Silvester/Euclid sequence 18