27741

Appears in sequences

• Antidiagonal sums of array A094954.at n=9A094957
• Solutions to A096509[x]=6; number of prime-powers [including primes] in the neighborhood of x with Ceiling[Log[x]] radius equals 6.at n=33A096517
• Numbers in base 10 that are palindromic in bases 5 and 6.at n=12A097930
• Expansion of 1/((1+x)*sqrt(1-2*x-3*x^2) - x).at n=10A116394
• Triangle, read by rows, where column k of T = column 0 of matrix power T^{(k+1)(k+2)/2} for k>=0, with T(n,0)=1 for n>=0.at n=41A134523
• G.f.: exp( Sum_{n>=1} sigma(2n)*x^n/n ).at n=16A182818
• Great rhombicuboctahedron with faces of centered polygons.at n=10A193252
• Number of permutations of length n with two 4-sequences.at n=10A247109
• Numbers that are nontrivially palindromic in two or more consecutive integer bases with non-constant number of digits .at n=9A327810
• Triangle read by rows: T(n,k) is the number of labeled quasi-threshold graphs on vertex set [n] with k components, for n >= 1 and 1 <= k <= n.at n=31A350528