A371690 - OEIS

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A371690

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

5

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

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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