152355

Appears in sequences

• Base-7 digits are, in order, the first n terms of the periodic sequence with initial period 1,2,0,3.at n=6A037691
• Number of intersection points of all lines through pairs of vertices of a regular n-gon.at n=32A146212
• Number T(n,k) of ordered set partitions of [n] into k blocks such that equal-sized blocks are ordered with increasing least elements; triangle T(n,k), n>=0, 0<=k<=n, read by rows.at n=50A285824
• Number of ordered set partitions of [n] into five blocks such that equal-sized blocks are ordered with increasing least elements.at n=4A285920
• a(n) = (2*n+1)*(n^3-2*n^2+n+1).at n=17A347319