1,3

This sequence shows a chaotic behavior.

Empirically, a(n) is even for any n > 2.

Rémy Sigrist, Table of n, a(n) for n = 1..10000

Rémy Sigrist, C++ program for A306743

a(n) = A306741(n, n).

a(3) = A306741(3, 3) = 2.

(C++) See Links section.

Cf. A005185, A306741.

Sequence in context: A059214 A091820 A171922 * A140821 A063789 A106264

Adjacent sequences: A306740 A306741 A306742 * A306744 A306745 A306746

nonn

Rémy Sigrist, Mar 07 2019

approved