19604

Appears in sequences

• a(0) = 1, a(n) = 18*n^2 + 2 for n>0.at n=33A010008
• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 70.at n=3A031748
• McKay-Thompson series of class 18B for the Monster group.at n=21A058532
• a(n) = (-1)^n * [x^n] Sum_{k>=1} x^(k-1)/(1+3*x^k).at n=9A101561
• Bond series for second parallel moment of Kagome lattice.at n=7A120547
• a(n) = 16*n^2 + 4.at n=34A158444
• Integers n such that (25*10^n)+1 is prime.at n=10A171612
• Number of n X 6 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 1 1 and 1 1 1 vertically.at n=12A208778
• McKay-Thompson series of class 18B for the Monster group with a(0) = 2.at n=21A215407
• McKay-Thompson series of class 18B for the Monster group with a(0) = 5.at n=21A215660
• Distance from Fibonacci(n) to the next perfect square.at n=43A216223
• Smallest distance of the n-th Fibonacci number to the set of all square integers.at n=43A243256
• a(n) = 29*n^2.at n=26A244635
• a(n) = T(n, 3), where T(n, k) = Sum_{i=0..n} i^k * binomial(n, i) * (1/2)^(n-k).at n=26A366151
• a(n) = Sum_{d|n} (-1)^(d-1) * 3^(n/d-1).at n=9A373276