A051123 a(n) = Fibonacci(n) OR Fibonacci(n+1).

1, 1, 3, 3, 7, 13, 13, 29, 55, 55, 127, 217, 249, 505, 891, 1019, 2047, 3645, 6749, 6781, 15087, 28655, 28671, 65521, 111921, 130865, 262003, 458611, 514551, 1047229, 1882877, 3522525, 3538919, 7849959, 14666991, 15719929, 32759801

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn
• easy
• base

Examples

			Fibonacci(6) = 8 = 1000_2, Fibonacci(7) = 13 = 1101_2, logical "OR" is 1101_2 = 13, so a(6)=13.
		

Crossrefs

A051122 + A051124 = A051123.

Programs

PARI

a(n) = bitor(fibonacci(n), fibonacci(n+1)); \\ Michel Marcus, Mar 06 2020

Extensions

More terms from Robert Lozyniak (11(AT)onna.com)