1,2

If n>1 then a(n) is even (see A001175). - Jon Maiga, Mar 25 2019

Jon Maiga, Table of n, a(n) for n = 1..23002 (2..23002 from Lars Blomberg)

a(n) = lcm(A001175(n), n). - Jon Maiga, Mar 24 2019

Example with n=3:

Fib(k): 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377, 610, 987, 1597, 2584, 4181, 6765, 10946, 17711, 28657, 46368

Fib(k) mod 3: 0,1,1,2,0,2,2,1,0,1,1,2,0,2,2,1,0,1,1,2,0,2,2,1,0

k mod 3: 0,1,2,0,1,2,0,1,2,0,1,2,0,1,2,0,1,2,0,1,2,0,1,2,0

k increases by 24 before it realigns with Fib(k) mod 3 therefore a(3) = lcm(A001175(3), 3) = lcm(8, 3) = 24.

Cf. A000045, A001175, A213277.

Sequence in context: A293256 A213344 A193429 * A029592 A112034 A327568

Adjacent sequences: A213275 A213276 A213277 * A213279 A213280 A213281

nonn

Lars Blomberg, Jun 09 2012

Changed offset to 1, added a(1)=1 and simplified name by Jon Maiga, Mar 25 2019

approved