3064320

Appears in sequences

• Related to A000032 (Lucas numbers): (n-1)!*L(n).at n=8A039647
• Jabotinsky-triangle related to A039647.at n=36A039692
• E.g.f. [1-x -sqrt(1-2x-3x^2)]/(2x) - [1+x-sqrt(1-2x-3x^2)]/2 .at n=8A052731
• Triangle read by rows: coefficients of polynomials p(x,n) defined by 1/(1-t-t^2)^x = Sum_{n=1..oo} p(x,n)*t^n/n!.at n=46A194938
• Number of labeled octopi with n nodes such that each tentacle has an odd number of nodes.at n=9A226968