490433

Appears in sequences

• Consider Pythagorean triples which satisfy X^2+(X+7)^2=Z^2; sequence gives increasing values of Z.at n=12A060569
• Consider all Pythagorean triples (X,X+7,Z); sequence gives Z values.at n=20A076294
• a(n) = 6*a(n-1) - a(n-2), with a(1) = 13, a(2) = 73.at n=6A220414