43164

Appears in sequences

• Nonnegative n such that 6*n^2 + 6*n + 1 is a square.at n=5A105038
• Antidiagonal sums of A147995 and A163545.at n=36A163484
• Triangle t(n,k) read by rows: fibonomial ratios c(n)/(c(k)*c(n-k)) where c are partial products of a generalized Fibonacci sequence with multiplier m=3.at n=24A172339
• Place two n-gons with radii 1 and 2 concentrically, forming an annular area between them. Connect all the vertices with line segments that lie entirely within that area. Then a(n) is the number of vertices in that figure.at n=30A337701
• Numbers k such that the sum of the proper divisors of k that have the same binary weight as k is larger than k, and no subset of these divisors sums to k.at n=23A381071