29525

Appears in sequences

• a(n) = (3^n + 1)/2.at n=10A007051
• Numbers k such that k | 9^k + 1.at n=13A015957
• Numbers having four 4's in base 9.at n=20A043472
• a(n) = 2*a(n-1) + 3*a(n-2), a(0) = a(1) = 1.at n=10A046717
• Array A read by diagonals; n-th difference of (A(k,n), A(k,n-1),..., A(k,0)) is (k+2)^(n-1), for n=1,2,3,...; k=0,1,2,...at n=55A047848
• Number of periodic palindromic structures of length n using a maximum of three different symbols.at n=21A056504
• Binomial transform of Jacobsthal gap sequence (A080924).at n=10A080925
• Table T(m,n) = (3^m + 5^n)/2, for m, n = 0, 2, 4, 6, ... read by antidiagonals downwards.at n=20A081458
• a(n) = (3^(2*n) + 1) / 2.at n=5A083884
• a(n) = (1/8)*Sum_{k=0..n} binomial(n,k)*Fibonacci(k)*8^k.at n=4A087603
• a(n) = (A085249(n) - 1)/6.at n=29A088349
• a(n) = 3*a(n-1) + a(n-2) - 3*a(n-3).at n=10A103425
• 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=11A124302
• a(n) = 3*a(n-1) - a(n-3) + 3*a(n-4), with initial values 1,4,14,41.at n=9A132357
• Numbers of the form x^5 + 10*x^3*y^2 + 5*x*y^4 (where x,y are integers).at n=32A135794
• a(0)=1; a(3n+1) = a(3n)+1, a(3n+2) = a(3n+1) + a(3n) (=3*A000244), a(3n+3) = a(3n+2) + a(3n) (=A003462(n+2)).at n=28A140298
• a(n) = (3*3^n-(-1)^n)/2.at n=9A164907
• a(n) = (3^n+1)/(3-(-1)^n).at n=10A167205
• a(n) = ((2*n+1)^5+(-1)^n)/2.at n=4A175111
• Dispersion of (3*n-1), read by antidiagonals.at n=55A191450