57450

Appears in sequences

• Smallest m such that A257218(m) = n.at n=52A257122
• Position of second and last occurrence of n in A256918.at n=52A257475
• Triangle read by rows: Take a pentagram with all diagonals drawn, as in A331906. Then T(n,k) = number of k-sided polygons in that figure for k = 3, 4, ..., n+2.at n=26A331907