21285

Appears in sequences

• a(n) = floor(n*(n-1)*(n-2)/4).at n=45A011886
• Coefficients of replicable function number 15a.at n=50A058512
• a(n) = 11*n^2 + 22*n.at n=42A067705
• a(n) = n*(16*n^2 - 1).at n=10A069975
• Denominator of sum of reciprocals of first n pentatope numbers A000332.at n=41A118412
• Number of strictly increasing arrangements of 4 numbers in -(n+2)..(n+2) with sum zero.at n=43A188182
• a(n) = 3*binomial(10*n+6,n)/(5*n+3).at n=4A234529
• Denominator of c(n) = (n^2+n+2)/((n+1)*(n+2)*(n+3)).at n=42A241269
• Number of length-n 0..2 arrays with no repeated value differing from the previous repeated value by plus or minus one modulo 2+1.at n=9A269684
• Numerator of (n-1)*n*(n+1)/4.at n=44A276670
• Composite numbers n such that the sum of proper divisors of n divides 2^n+1.at n=14A278337
• Numbers k such that (482*10^k - 41)/9 is prime.at n=19A291923
• a(n) = 32*3^n - 2^(n+5) + 5.at n=6A305861
• Number of minimal total dominating sets in the 2 X n king graph.at n=13A332392
• Array read by ascending antidiagonals: A(n, k) = n!*[x^n] Li(-k, 1 - exp(-4*x))/(4*sinh(x)), where Li(n, z) is the polylogarithm function.at n=42A345394
• Upper (3/2)-midsequence of binomial(n,3) and binomial(n,2); see Comments.at n=44A390343