18250

Appears in sequences

• a(n) = a(n-1) + the number of primes <= a(n-1).at n=46A061535
• Kekulé numbers for certain benzenoids.at n=5A110692
• Number of permutations of 1..n containing the relative rank sequence { 146325 } at any spacing.at n=3A159119
• Partial sums of A000272.at n=7A173249
• Sequence of traces arising in study of Thue-Morse sequence.at n=8A201170
• n^3 + floor(n^3/2).at n=22A211786
• Numbers k such that phi(k) equals the product of two numbers: sums of prime factors of k, with and without repetition.at n=3A237798
• Number of (6+1) X (n+1) 0..1 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction.at n=9A250774
• a(n) = Sum_{d|n} max(d, n/d)^3.at n=19A297842
• Coefficient of x^n in 1/(n+1) * (1 + x - 3*x^2)^(n+1).at n=11A308036
• Number of free pure symmetric multifunctions with leaves a multiset whose multiplicities are the integer partition with Heinz number n.at n=35A317655