74547

Appears in sequences

• Beginning with 2, smallest palindrome >= the previous term such that every concatenation is a prime.at n=17A088093
• Number of isomers of polyhex hydrocarbons with C_(2v) symmetry with nineteen hexagons.at n=22A120448
• a(n) = n*(4*n^2+5*n-3)/2.at n=32A126335
• 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, 0, 0), (0, -1, 1), (1, 0, -1), (1, 1, 1)}.at n=9A149606
• Number of n X 4 arrays of the minimum value of corresponding elements and their horizontal, diagonal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 n X 4 array.at n=4A220040
• T(n,k)=Number of nXk arrays of the minimum value of corresponding elements and their horizontal, diagonal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 nXk array.at n=32A220044
• Number of 5Xn arrays of the minimum value of corresponding elements and their horizontal, diagonal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 5Xn array.at n=3A220048