1,1

In other words, let f(n) = g.c.d. (n^17 + 9, (n+1)^17 + 9). Then f(n) = 1 for all n <= 8424432925592889329288197322308900672459420460792432, but f(8424432925592889329288197322308900672459420460792433) > 1.

In fact f(8424432925592889329288197322308900672459420460792433) = 8936582237915716659950962253358945635793453256935559.

Tanya Khovanova, Non Recursions

Problem of the week, Web site - see Problem 805.

Sequence in context: A095492 A095494 A095496 this_sequence A118329 A095498 A095500

Adjacent sequences: A010031 A010032 A010033 this_sequence A010035 A010036 A010037

nonn,bref

Ilan Vardi, Stan Wagon (WAGON(AT)macalstr.edu)