705672

Appears in sequences

• This list of numbers a(i) has the property that every left-subset of length n > 0 of the numbers a(i) is divisible by i+n and are the largest such integers for every i.at n=13A113538
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, 0, 0), (1, 0, 0), (1, 0, 1), (1, 1, 0)}.at n=10A151162
• E.g.f. (1+arctan(x))^arctan(x).at n=11A191471
• a(n) = Sum_{k=0..n} binomial(k+2,2) * binomial(k,2*(n-k)).at n=17A391963