78003

Appears in sequences

• a(n) = 3^(floor(n/2))+3^(floor(n/2)-1)-3^(floor((n-1)/3)).at n=18A170832
• a(n) = 3^(floor(n/2))+3^(floor(n/2)-1)-3^(floor((n-1)/3)).at n=19A170832
• Number of pairs (lambda,mu) of partitions lambda of n and mu of three with mu <= lambda (by diagram containment).at n=35A303853
• Numbers c such that a + b + c = d are abcd quadruples in the "abcd-conjecture" with a < b < c < d, all |a|, b, c, d are pairwise coprime, the quality q of the quadruple has q > 1, term a = +/- 1 = A376149(n) and term b = A376144(n) (with repetitions and sorted by c then b).at n=17A376143