203100

Appears in sequences

• Number of n X 3 0..2 arrays with rows and columns lexicographically nondecreasing read forwards and nonincreasing read backwards.at n=18A201695
• Theta series of the 12-dimensional lattice of hyper-roots A_2(SU(3)).at n=14A290654
• x-value of the smallest solution to 2*x^2 - p*y^2 = (-1)^((p+1)/4), p = A002145(n).at n=22A306618
• The lowest number on Ulam Spiral for which all numbers in the square which is centered at a(n) and spans n-1 spaces in each cardinal direction are nonprime.at n=5A357376