A338503 a(n) is the square root of A338502(1) XOR ... XOR A338502(n) (where XOR denotes the bitwise XOR operator).

0, 1, 2, 0, 3, 1, 4, 0, 5, 1, 6, 7, 4, 2, 3, 6, 2, 5, 7, 1, 8, 10, 9, 5, 6, 4, 8, 11, 6, 10, 7, 0, 9, 3, 7, 9, 6, 8, 2, 11, 4, 10, 1, 11, 3, 8, 5, 12, 14, 13, 6, 12, 15, 10, 14, 8, 15, 11, 0, 12, 4, 13, 1, 12, 2, 13, 0, 14, 9, 15, 6, 14, 11, 13, 10, 12, 3, 15

Offset: 1

Author

Rémy Sigrist, Oct 31 2020

Keywords

• nonn
• base

Examples

			For n = 3:
- A338502(1) AND A338502(2) AND A338502(3) = 0 AND 1 AND 5 = 4 = 2^2,
- so a(3) = 2.
		

Links

• Rémy Sigrist, Table of n, a(n) for n = 1..10000
• Rémy Sigrist, PARI program for A338503

Crossrefs

Cf. A292389, A338502.

Programs

PARI

See Links section.