871696100
domain: N
Appears in sequences
- a(n) = 2*a(n-1) + 3*a(n-2), with a(0)=0, a(1)=1.at n=20A015518
- Numbers n such that A081249(m)/m^2 has a local maximum for m = n.at n=18A081251
- Numbers whose base-9 representation is 22222222.......2.at n=10A125857
- a(n) = 3*a(n-1) - a(n-3) + 3*a(n-4), starting with 1, 2, 6, 20.at n=19A132353
- Moore lower bound on the order of a (10,g)-cage.at n=17A198310
- Oblong numbers m such that beta(m) = tau(m)/2 where beta(m) is the number of Brazilian representations of m and tau(m) is the number of divisors of m.at n=14A326385