a(n) = 4^n cos(nC), where C is the angle opposite side AB in a triangle ABC having sidelengths |BC|=2, |CA| = 3, |AB| = 4; ABC is the smallest integer-sided scalene triangle.
A375882
a(n) = 4^n cos(nC), where C is the angle opposite side AB in a triangle ABC having sidelengths |BC|=2, |CA| = 3, |AB| = 4; ABC is the smallest integer-sided scalene triangle.
Terms
- a(0) =1a(1) =-1a(2) =-14a(3) =44a(4) =136a(5) =-976a(6) =-224a(7) =16064a(8) =-28544a(9) =-199936a(10) =856576a(11) =1485824a(12) =-16676864a(13) =9580544a(14) =247668736a(15) =-648626176a(16) =-2665447424a(17) =15708913664a(18) =11229331456a(19) =-273801281536a(20) =367933259776
External references
- oeis: A375882