A371691 Main diagonal of A365992: parity of the n-th term in the trajectory of n under the A185452 map.

1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 1, 0, 0, 0, 1, 0, 0, 1, 1, 0, 1, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 1, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 0, 0, 1, 0, 1, 0, 0, 1, 1, 1, 0, 1, 1, 1, 1, 0

Offset

1

Comments

See A365992 for more information and links.

Links

Paolo Xausa, Table of n, a(n) for n = 1..10000

Index entries for sequences related to 3x+1 (or Collatz) problem

Formula

a(n) = A368301(n) mod 2 = A365992(n,n-1).

Mathematica

Table[Mod[Nest[If[OddQ[#], (5*#+1)/2, #/2] &, n, n-1], 2], {n, 100}]

Crossrefs

Parity of A368301.

Cf. A185452, A365991, A365992, A371689, A371690.

Sequence in context: A187972 A248396 A285952 * A103842 A286064 A065535

Adjacent sequences: A371688 A371689 A371690 * A371692 A371693 A371694

Keyword

nonn,easy

Author

Paolo Xausa, Apr 04 2024

Status

approved