58386

Appears in sequences

• Number of planar n X n X n binary triangular grids symmetric both under 120 degree rotation and reflection with every one adjacent to exactly 2 other ones.at n=18A153988
• Number of length 6+2 0..n arrays with every three consecutive terms having the sum of some two elements equal to twice the third.at n=26A248439
• a(n) = n*(n + 1)*(7*n + 11)/6.at n=36A255687
• Expansion of (1/(1 - x))*Sum_{k>=0} k!*x^(k*(k+1)/2)/Product_{j=1..k} (1 - x^j).at n=27A303664
• a(n) = Sum_{k=1..n} gcd(k, n)^3.at n=35A343497
• Numbers k such that A075255(k) is the square of a prime.at n=37A386954