48927

Appears in sequences

• Number of n X n integer matrices, symmetric under 90-degree rotation, with adjacent elements differing by no more than 1, counting matrices differing by a constant only once.at n=6A141444
• The smallest positive integer that produces exactly n primes in a Collatz trajectory.at n=45A181921
• Coefficient of x in the reduction by x^2->x+1 of the polynomial p(n,x) defined below in Comments.at n=19A192762
• Number of 5 X n 0..2 arrays with no element equal to the sum of elements to its left or one plus the sum of the elements above it, modulo 3.at n=13A239032
• Products of three distinct primes p1, p2 and p3 (sphenic numbers) with p1<p2 and p3 is the concatenation of p1 with p2.at n=13A281592
• Numbers n for which exactly one length minimal language exists having exactly n nonempty words over a countably infinite alphabet such that within each prefix of a word every letter of the alphabet is at least as frequent as the subsequent alphabet letter.at n=11A294129
• Number of non-quanimous subsets of {1..n} containing n, meaning there is only one set partition with equal block-sums.at n=17A371790
• Expansion of 1/((1-x)^8 - 16*x^8)^(1/8).at n=17A376836