28047

Appears in sequences

• a(n) = floor(n*phi^19), where phi is the golden ratio, A001622.at n=3A004934
• a(n) = round(n*phi^19), where phi is the golden ratio, A001622.at n=3A004954
• Fibonacci sequence beginning 3, 9.at n=18A022379
• Numbers k such that 10^999 + k is a (titanic) prime.at n=17A074282
• 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, 0), (-1, 1, -1), (-1, 1, 1), (1, 0, 0), (1, 0, 1)}.at n=8A150320
• Triangle T(n, k, j) = T(n-1, k, j) + T(n-1, k-1, j) + (2*j + 1)*prime(j)*T(n-2, k-1, j) with T(2, k, j) = prime(j) and j = 10, read by rows.at n=22A153655
• Triangle T(n, k, j) = T(n-1, k, j) + T(n-1, k-1, j) + (2*j + 1)*prime(j)*T(n-2, k-1, j) with T(2, k, j) = prime(j) and j = 10, read by rows.at n=26A153655
• Number of (w,x,y,z) with all terms in {1,...,n} and w^2>=x*y*z.at n=21A212064
• Decimal representation of the n-th iteration of the "Rule 62" elementary cellular automaton starting with a single ON (black) cell.at n=7A266810
• G.f. A(x) satisfies A(x) = 1 + x/(1+x^2)^2 * A(x)^3.at n=8A390170