51491

Appears in sequences

• A027642(6*n+6)/(sequence of period 2:repeat 42,210).at n=24A216639
• T(n,k)=Number of nXk arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..2 nXk array.at n=47A219627
• Number of 3Xn arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..2 3Xn array.at n=7A219629
• A fourth-order linear divisibility sequence: a(n) = (2^n + 1)*(2^(3*n) - 1)/ ( (2 + 1)*(2^3 - 1) ).at n=4A238538
• a(n) = sigma_2(n)*sigma_3(n)/sigma(n).at n=15A320917