A345873 a(n) = A345415(A345872(n), A345872(n+1)).

0, 1, -1, 2, 3, -2, -3, -4, 6, -5, 5, 9, 4, 7, -6, -8, -9, 10, 11, -7, -12, 8, -11, -16, 13, -15, -19, -10, 12, 15, 19, -13, 20, -20, 21, 22, 14, -17, 18, 23, 16, 17, -14, -25, 26, -23, 27, -29, -28, -27, -26, 29, -24, -33, 25, 33, -18, 28, -22, 31, -21, -35

Offset: 1

Author

Rémy Sigrist, Jun 27 2021

Keywords

• sign

Comments

All terms are distinct.

Examples

			a(3) = A345415(A345872(3), A345872(4)) = A345415(2, 3) = -1.
		

Links

• Rémy Sigrist, Table of n, a(n) for n = 1..10000
• Rémy Sigrist, PARI program for A345873

Crossrefs

Cf. A345415, A345872.

Programs

PARI

See Links section.