281792

Appears in sequences

• Number of solutions to a+b+c < d+e with each of a,b,c,d,e in {1..n+1}.at n=15A179441
• Triangle T(n,k) read by rows: coefficients of polynomials P_n(t) defined in Formula section.at n=43A286782
• Column 6 of A286782.at n=2A287036
• The number of partitions of [n] with exactly 4 blocks without peaks.at n=13A289694