78407

Appears in sequences

• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 80.at n=6A031758
• a(n) = 49*n^2 + 7.at n=39A158481
• a(n) = 72*n^2 - 1.at n=32A158738
• Number of reduced words of length n in the Weyl group B_23.at n=5A161930
• Number of reduced words of length n in the Weyl group D_23.at n=5A162365
• Number of arrays of -3..3 integers x(1..n) with every x(i) in a subsequence of length 1, 2 or 3 with sum zero.at n=7A193697
• T(n,k)=Number of arrays of -k..k integers x(1..n) with every x(i) being in a subsequence of length 1, 2 or 3 with sum zero.at n=52A193702
• Numbers m such that T(m) + 2*T(m+1) is a square, where T = A000217.at n=2A278438