15597568

Appears in sequences

• Negated coefficients of Chebyshev T polynomials: [x^n](-T(n+6, x)), n >= 0.at n=15A001794
• a(n) = S1(n,1), where S1(n, t) = Sum_{k=0..n} (k^t * Sum_{j=0..k} binomial(n,j)).at n=17A089658
• Number of n X 3 0..1 arrays with no element equal to more than one of its horizontal and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.at n=17A281200