39481

Appears in sequences

• Strong pseudoprimes to base 73.at n=17A020299
• Number of nonisomorphic systems of catafusenes in an example in Cyvin et al. (1994) with two appendages to the core indexed by the total number of hexagons in the appendages.at n=9A045903
• Four-column table read by rows: number of nonisomorphic systems of catafusenes in an example (see Cyvin et al. (1994) for precise definition).at n=33A121178
• E.g.f. satisfies: A(x) = exp( Sum_{n>=0} a(n)*x^(2n+1)/(2n+1)! ).at n=11A138314
• Number of length 7+2 0..n arrays with every three consecutive terms having the sum of some two elements equal to twice the third.at n=15A248440
• a(n) = 32*n^2 - 56*n + 25.at n=36A272129