A387087 GCD of pairs of consecutive terms of the sequence A386482.

1, 2, 2, 3, 3, 3, 2, 2, 2, 7, 7, 3, 2, 4, 5, 5, 5, 5, 2, 2, 2, 2, 11, 11, 3, 9, 2, 2, 2, 19, 19, 3, 2, 2, 2, 2, 2, 2, 2, 5, 5, 3, 13, 13, 5, 2, 2, 7, 7, 3, 17, 17, 2, 2, 2, 31, 31, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 5, 5, 3, 23, 23, 2, 47, 47, 3, 2, 2, 2, 2, 2

Offset: 1

Author

Rémy Sigrist, Aug 16 2025

Keywords

• nonn

Examples

			The first terms, alongside the first terms of A386482, are:
  n   a(n)  A386482(n)
  --  ----  ----------
   1     1           1
   2     2           2
   3     2           4
   4     3           6
   5     3           3
   6     3           9
   7     2          12
   8     2          10
   9     2           8
  10     7          14
  11     7           7
  12     3          21
  13     2          18
  14     4          16
		

Links

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

Crossrefs

Cf. A073734, A386482.

Programs

PARI

\\ See Links section.

Formula

a(n) = gcd(A386482(n), A386482(n+1)).