49829

Appears in sequences

• Numbers k such that k and k^2 use only the digits 1, 2, 4, 8 and 9.at n=30A137000
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, -1), (-1, -1, 0), (-1, 1, 0), (-1, 1, 1), (1, 0, 0)}.at n=11A148548
• a(n) = n^3 - 3*(n+3)^2.at n=38A153260
• Natural number that is a factor of its number of "feasible" partition(s).at n=10A254437
• a(n) is the integer part of r^n where r^2 = Sum_{n>=1} 1/a(n).at n=24A266331
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 267", based on the 5-celled von Neumann neighborhood.at n=42A271085
• a(n) = Sum_{k=1..n} k^rad(k).at n=5A350997
• a(0) = 1; a(n) = Sum_{k=0..floor((n-1)/2)} 4^k * a(k) * a(n-2*k-1).at n=11A352008
• a(n) = n! * (n+1)! * Sum_{k=0..n} (-1)^k/(k! * (k+1)!).at n=5A368853