978671

Appears in sequences

• Cellular automaton with Rule 230: 000, 001, 010, 011, ..., 111 -> 0,1,1,0,0,1,1,1.at n=19A006977
• a(0) = 0 and a(n) = (5*(-4)^n + 16*(-1)^n + 9*4^n)/240 for n >= 1.at n=12A113968
• a(n) = n^5-n^4-n^3-n^2-n-1.at n=16A125083
• a(0)=1, a(1)=2; for n>1, a(n)=3*a(n-1)+4*a(n-2)+5.at n=10A126019
• a(n) = Sum_{d|n} (-1)^(n/d+1)*d^4.at n=31A284900
• a(n) = Sum_{1 <= x_1, x_2, x_3 <= n} n/gcd(x_1, x_2, x_3, n).at n=31A372952