30365

Appears in sequences

• Discriminants of real quadratic fields with class number 2 and related continued fraction period length of 19.at n=17A051984
• Consider all Consecutive Integer Pythagorean 11-tuples (X, X+1, X+2, X+3, X+4, X+5, Z-4, Z-3, Z-2, Z-1, Z) ordered by increasing Z; sequence gives Z values.at n=3A157097
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 441", based on the 5-celled von Neumann neighborhood.at n=33A272223
• Length of shortest prefix of the Kolakoski sequence K (A000002) containing all blocks of length n that appear in K.at n=41A283511
• Expansion of e.g.f. exp(3*x) / (3 - 2*exp(x)).at n=5A368320
• G.f.: Sum_{k>=0} x^(k^2) / Product_{j=1..k} (1 - x^(2*j-1))^2.at n=50A376581
• Dot product of the first n primes and the first n triangular numbers.at n=15A378493