21634

Appears in sequences

• a(0) = 1, a(n) = 32*n^2 + 2 for n > 0.at n=26A010021
• Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite DDR = Deca-dodecasil 3R[Si120O240]qR starting with a T3 atom.at n=13A019111
• Number of hexagonal regions in regular n-gon with all diagonals drawn.at n=52A067153
• Coefficients of the D-Dyson mod 27 identity.at n=42A104504
• Number of nX3 0..2 arrays with exactly floor(nX3/2) elements unequal to at least one king-move neighbor, with new values introduced in row major 0..2 order.at n=7A222397
• T(n,k)=Number of nXk 0..2 arrays with exactly floor(nXk/2) elements unequal to at least one king-move neighbor, with new values introduced in row major 0..2 order.at n=47A222402
• T(n,k)=Number of nXk 0..2 arrays with exactly floor(nXk/2) elements unequal to at least one king-move neighbor, with new values introduced in row major 0..2 order.at n=52A222402
• Number of nondecreasing -n..n vectors of length 3 whose dot product with some lexicographically greater than or equal to nondecreasing -n..n vector equals 3.at n=27A226424
• Expansion of Product_{k>=1} (Product_{j=1..k} (1 + x^(k*j))^j).at n=34A327063