30018

Appears in sequences

• Number of positive integers <= 2^n of form x^2 + 15 y^2.at n=18A054229
• Values of n such that n^a-+a are primes, a=5.at n=31A155021
• Number of 0..n arrays x(0..7) of 8 elements with zero 5th differences.at n=24A200275
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 190", based on the 5-celled von Neumann neighborhood.at n=42A270683
• a(n) is the smallest number k such that A001065(k) = A002110(n), or 0 if no such k exists.at n=6A291373
• Indices of (probable) primes in A030221.at n=22A299101
• Table read by antidiagonals upward: T(n,k) is the number of ways to move a chess queen from (1,1) to (n,k) in the first quadrant using only right, diagonal up-right, and diagonal up-left moves.at n=40A334016
• Number of ways to choose a multiset of values whose sum is n from the first floor(1+log_2(n)) rows of Pascal's triangle.at n=45A366120