30489

Appears in sequences

• a(n) = 2*7^n-5^n.at n=5A081627
• Smallest precursor of n-th cycle in the "Recurring Digital Invariant Variant" problem.at n=29A151543
• Arises from a construction of equiangular lines in complex space of dimension 2.at n=20A239909
• Number of partitions of n where the minimal multiplicity of any part is 2.at n=64A244515
• Number of compositions of n whose run-lengths are either weakly increasing or weakly decreasing.at n=18A332835