18842

Appears in sequences

• Tetranacci numbers A073817 without the leading term 4.at n=14A001648
• Fibonacci sequence beginning 5, 16.at n=16A022140
• Tetranacci numbers with different initial conditions: a(n) = a(n-1) + a(n-2) + a(n-3) + a(n-4) starting with a(0)=4, a(1)=1, a(2)=3, a(3)=7.at n=15A073817
• Exponent of least power of 2 having exactly n consecutive 6's in its decimal representation.at n=8A131540
• n^3 - (n+2)^2.at n=27A153258
• Numbers n such that A242719(n) = (prime(n))^2+1 and A242720(n) - A242719(n) = 2*(prime(n)+1).at n=24A246748
• Number of n X 3 0..1 arrays with the number of 1's horizontally, antidiagonally or vertically adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero.at n=5A284194
• Number of n X 6 0..1 arrays with the number of 1's horizontally, antidiagonally or vertically adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero.at n=2A284197
• T(n,k) = Number of n X k 0..1 arrays with the number of 1's horizontally, antidiagonally or vertically adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero.at n=30A284199
• T(n,k) = Number of n X k 0..1 arrays with the number of 1's horizontally, antidiagonally or vertically adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero.at n=33A284199
• Number of minimal total dominating sets in the wheel graph on n nodes.at n=34A302658
• Expansion of Product_{i>=1, j>=1, k>=1, l>=1} (1 + x^(i*j*k*l))/(1 - x^(i*j*k*l)).at n=10A321240
• The number of small Schröder paths such that the area between the path and the x-axis contains n up-triangles.at n=12A326793