181540151

Appears in sequences

• Denominators of continued fraction convergents to sqrt(143).at n=12A041263
• The general form of the recurrences are the a(j), b(j) and n(j) solutions of the 2 equations problem: 11*n(j) + 1 = a(j)*a(j) and 13*n(j) + 1 = b(j)*b(j), with positive integer numbers.at n=6A159664