28782

Appears in sequences

• Number of ordered quadruples of integers from [ 2,n ] with no common factors between triples.at n=31A015639
• Palindromes with exactly 6 prime factors (counted with multiplicity).at n=13A046332
• Final terms of rows of A077529.at n=17A077530
• Palindromes for which the multiplicative digital root is a prime.at n=31A117059
• Number of successions in all the permutations p of [n] such that p(1)=1 and having no 3-sequences. A succession of a permutation p is a position i such that p(i +1) - p(i) = 1.at n=8A180187
• Triangle read by rows: number of circular permutations of [1..n] with k progressions of rise 1, distance 1 and length 3 (n >= 3, k >= 0).at n=37A216718
• Number of 2 X n arrays of the minimum value of corresponding elements and their horizontal, vertical or diagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 2 X n array.at n=17A220205
• Smallest palindrome which requires at least n iterations of Reverse and Add to reach a palindrome.at n=31A222533
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 430", based on the 5-celled von Neumann neighborhood.at n=41A272116
• Palindromes that can be written in more than one way as the sum of two distinct palindromic primes.at n=18A356854
• Palindromes that can be written in more than one way as the sum of two palindromic primes.at n=21A356881
• a(n) is the first number that is the sum of two palindromic primes in exactly n ways.at n=6A379138