24353

Appears in sequences

• Convolution of natural numbers n >= 1 with Lucas numbers L(k) (A000032) for k >= 3.at n=14A033813
• a(n) = Sum_{j=0..floor(n/2)} (-1)^(j+floor(n/2))*S(2j+q), where S(n) are generalized tribonacci numbers (A001644) and q = (1-(-1)^n)/2.at n=17A074678
• Numbers k such that phi(k)*sigma(k) is a cube.at n=14A114077
• Cubeful numbers whose neighbors are also cubeful.at n=11A122692
• Number of n X 8 0..3 arrays with values 0..3 introduced in row major order, the number of instances of each value within one of each other, and every element equal to exactly one horizontal or vertical neighbor.at n=2A199091
• T(n,k)=Number of nXk 0..3 arrays with values 0..3 introduced in row major order, the number of instances of each value within one of each other, and every element equal to exactly one horizontal or vertical neighbor.at n=47A199092
• T(n,k)=Number of nXk 0..3 arrays with values 0..3 introduced in row major order, the number of instances of each value within one of each other, and every element equal to exactly one horizontal or vertical neighbor.at n=52A199092
• Number of 0..7 arrays of length n with each element unequal to at least one neighbor, starting with 0.at n=5A221462
• Number of 0..n arrays of length 6 with each element unequal to at least one neighbor, starting with 0.at n=6A221465
• Numbers m such that there are precisely 17 groups of order m.at n=13A294949
• Numbers k such that 479*2^k+1 is prime.at n=21A319488
• G.f. satisfies A(x) = A(x^2)/M(x), where M(x) = Sum_{n>=1} mu(n)*x^n and mu(n) = A008683(n), the Moebius function of n.at n=18A378260