21027

Appears in sequences

• a(0) = 1, a(n) = 25*n^2 + 2 for n > 0.at n=29A010015
• Number of binary strings of length n with no substrings equal to 0000 0110 or 1001.at n=15A164439
• Number of ordered triples (w,x,y) with all terms in {-n,...-1,1,...,n} and w+x+y>2.at n=18A211614
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 926", based on the 5-celled von Neumann neighborhood.at n=34A273778
• Indices of the primes of |A007442|.at n=21A359629
• a(n) = number of isogeny classes of abelian surfaces over the finite field of order prime(n).at n=36A362198