A371690 Main diagonal of A347283: parity of the n-th term in the trajectory of n under the A006370 map.

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

Offset

1

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) = A347272(n-1) mod 2 = A347283(n,n-1).

Mathematica

Table[Mod[Nest[If[OddQ[#], 3*#+1, #/2] &, n, n-1], 2], {n, 100}]

Crossrefs

Parity of A347272.

Cf. A006370, A347270, A347283, A371689, A371691.

Sequence in context: A014042 A014075 A204269 * A179830 A266216 A025446

Adjacent sequences: A371687 A371688 A371689 * A371691 A371692 A371693

Keyword

nonn,easy

Author

Paolo Xausa, Apr 04 2024

Status

approved