71545

Appears in sequences

• Numbers k such that 40*R_k + 1 is prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=14A056681
• Number of set partitions of [n] such that the difference between each element and its block index is a multiple of ten.at n=33A274843
• Congruence-uniform lattices on n unlabeled nodes.at n=13A292790