15690529805
domain: N
Appears in sequences
- a(n) = (3^n + 1)/2.at n=22A007051
- a(n) = 2*a(n-1) + 3*a(n-2), a(0) = a(1) = 1.at n=22A046717
- Binomial transform of Jacobsthal gap sequence (A080924).at n=22A080925
- a(n) = (3^(2*n) + 1) / 2.at n=11A083884
- a(n) = 3*a(n-1) + a(n-2) - 3*a(n-3).at n=22A103425
- Number of set partitions with at most 3 blocks; number of Dyck paths of height at most 4; dimension of space of symmetric polynomials in 3 noncommuting variables.at n=23A124302
- a(n) = 3*a(n-1) - a(n-3) + 3*a(n-4), with initial values 1,4,14,41.at n=21A132357
- a(n) = (3*3^n-(-1)^n)/2.at n=21A164907
- a(n) = (3^n+1)/(3-(-1)^n).at n=22A167205