51343

Properties

Appears in sequences

• Least k such that the first k terms of A006928 contain n more 2's than 1's.at n=36A025507
• Numbers having four 7's in base 9.at n=17A043484
• Prime quadruples: 2nd term.at n=25A136720
• Number of walks within N^2 (the first quadrant of Z^2) starting at (0,0), ending on the vertical axis and consisting of 2 n steps taken from {(-1, 1), (1, -1), (1, 0), (1, 1)}.at n=6A151418
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 541", based on the 5-celled von Neumann neighborhood.at n=36A272807
• Least prime of exactly n consecutive primes all of which are regular.at n=14A306750
• a(2) = a(3) = 1; for n >3, a(n) = largest prime factor of n-th Tribonacci number.at n=22A366584
• Expansion of ((Product_{k>=1} (1 - x^k)^2/(1 - 4*x^k + x^(2k))) - 1)/2.at n=9A386706
• Prime numbersat n=5252