40881

Appears in sequences

• Number of cubic residues mod 3^n.at n=11A046631
• Expansion of x/((1-x)*(1-x^2-2*x^3)).at n=26A077882
• (3^p+p)/(p+1) with (p + 1) odd prime > 3.at n=3A121823
• 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, 0), (-1, 0, 0), (-1, 1, 1), (1, 0, -1), (1, 0, 1)}.at n=9A149294
• a(n) + a(n+1) + a(n+2) = 3^n.at n=11A152733
• Row sums of absolute values of A182928.at n=8A182926
• Row sums of A182928.at n=8A182927
• Number of (n+2) X (1+2) 0..2 arrays with each row and column divisible by 13, read as a base-3 number with top and left being the most significant digits.at n=9A263334
• G.f.: Product_{k>=1} Sum_{n>=0} x^(k*n) / (1 - x^(n+k)).at n=24A341959
• a(n) = (1/(2*n)) * Sum_{d|n} 3^(n/d-1) * phi(3*d).at n=12A364210
• a(n) = (n-1)! * Sum_{d|n} 1/((d-1)! * (n/d)!^(d-1)).at n=8A370608