239701

Appears in sequences

• Pseudoprimes to base 3 that are not squarefree.at n=9A244065
• Number of 5Xn arrays containing n copies of 0..5-1 with every element equal to or 1 greater than any west, northeast or northwest neighbors modulo 5 and the upper left element equal to 0.at n=14A267427
• E.g.f. C(x) + S(x), where C(x)^2 - S(x)^2 = 1 and D(x)^3 - S(x)^3 = 1, and functions S(x), C(x), and D(x) are described by A280620, A280621, and A280622, respectively.at n=10A280623
• Pseudoprimes to base 3 that are not squarefree, including the non-coprime pseudoprimes.at n=10A306452
• Index position of {3}^n within the list of partitions of 3n in canonical ordering.at n=17A332720