43456

Appears in sequences

• G.f.: (1-x)/(1-8*x-8*x^2+8*x^3).at n=5A159617
• a(2)=6; thereafter a(n) = smallest number m such that a(n-1)+m = (a(n-1) followed by the leading digit of m).at n=4A224757
• a(n) = 4*a(n-1) - a(n-2) with a(0) = 0, a(1) = 4.at n=8A231896
• Number of (n+1)X(3+1) 0..1 arrays with 2X2 subblock sums lexicographically nondecreasing columnwise and rowwise.at n=3A238250
• Number of (n+1)X(4+1) 0..1 arrays with 2X2 subblock sums lexicographically nondecreasing columnwise and rowwise.at n=2A238251
• T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with 2X2 subblock sums lexicographically nondecreasing columnwise and rowwise.at n=17A238255
• T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with 2X2 subblock sums lexicographically nondecreasing columnwise and rowwise.at n=18A238255
• a(n) = 8*((9*n + 8)*10^n - 8)/81.at n=4A294329
• Number of quadrilaterals in the graph formed by drawing the lines connecting any two of the 2*(n+2) perimeter points of a 3 X (n+1) rectangular grid of points (or equally, a 2 X n grid of squares).at n=24A332607
• Numbers k that can be written as the sum of a perfect square and a factorial in at least 2 distinct ways.at n=40A358071
• Numbers k that divide the k-th Domb number.at n=34A372941