A072770 Triangle A072768 computed modulo 2.

1, 0, 0, 1, 1, 1, 1, 0, 0, 1, 0, 0, 1, 0, 0, 0, 1, 1, 1, 1, 0, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 1, 0, 0, 0, 1, 1, 1, 0, 0, 0, 1, 1, 0, 1, 0, 1, 1, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 0, 1

Offset: 1

Author

Antti Karttunen, Jun 12 2002

Keywords

• nonn
• tabl

Comments

Differs from A071674 first time at the position n=37, where A072770(37) = 0, while A071674(37) = 1.

The term a(0)=0 is not explicitly listed here as to get a better looking triangle.

Crossrefs

a(n) = (A072769(n) + A071674(n)) mod 2.

Programs

Scheme

(define (A072770 n) (modulo (A072768 n) 2))