131085
domain: N
Appears in sequences
- Diagonal above the central terms of pendular trinomial triangle A119369, ignoring leading zeros.at n=9A119375
- Row sums of triangle A132737.at n=16A132738
- Sums of three Mersenne primes.at n=37A174055
- The sum of 2^((d-1)/2) over all divisors of 2n+1.at n=17A339916
- a(n) is the next Ulam number (A002858) after 2^(n-1).at n=18A347212
- Number of pairs of Dyck paths of semilength n such that the midpoint of the first is not below the midpoint of the second.at n=7A357652
- Expansion of Sum_{k>0} x^k / (1 - 2*x^(2*k)).at n=34A364034