-1819

Appears in sequences

• Binomial transform of Moebius sequence.at n=15A104688
• a(n) = -n^2 + 9*n + 53.at n=48A126665
• Triangle T(n,k) = A015442(k) - A015442(n) + A015442(n-k) read by rows.at n=31A176264
• Triangle T(n,k) = A015442(k) - A015442(n) + A015442(n-k) read by rows.at n=32A176264
• Value of y in the Diophantine equation x^3 + y^3 = n*z^3 (with x>0 and minimal and x >= y and y != 0).at n=24A190580
• Expansion of psi(x^3)^3 / (psi(x)^2 * psi(x^2)) in powers of x where psi() is a Ramanujan theta function.at n=29A262157
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 433", based on the 5-celled von Neumann neighborhood.at n=31A272148
• a(n) = A322227(n) / (n*(n+1)/2), where A322227(n) = [x^(n-1)] Product_{k=1..n} (k + x - k*x^2), for n >= 1.at n=6A322226
• Deficiency of squares: a(n) = 2n^2 - sigma(n^2).at n=53A377879