150004

Appears in sequences

• Trajectory of 3 under map n->7n+1 if n odd, n->n/2 if n even.at n=34A037101
• a(0)=7; a(n) = 7*a(n-1) + 1 if a(n-1) is odd, a(n) = a(n-1)/2 otherwise.at n=39A271623
• Number of 4Xn 0..1 arrays with every element equal to 0, 1 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero.at n=14A301966