40020750

Appears in sequences

• Even terms in A260442 (in A260443).at n=34A277200
• Prime-factorization representation of the prime-th Stern-polynomial: a(n) = A260443(A000040(n)).at n=18A277316
• Prime-factorization representation of irreducible (non-constant) Stern-polynomials B(n,x), listed in the order of increasing index n: a(n) = A260443(A186891(n+1)).at n=21A277318
• Odd bisection of A260443 (the even terms): a(n) = A260443((2*n)+1).at n=33A277324
• Regular triangle where T(n,k) is the number of pairs of set partitions of {1,...,n} with meet of length k.at n=41A318391