43911

Appears in sequences

• Generalized Lucas numbers.at n=14A006493
• Expansion of Sum_{n>=0} (q^n / Product_{k=1..n+5} (1 - q^k)).at n=36A035301
• Numbers n such that x^n + x^11 + 1 is irreducible over GF(2).at n=38A057481
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, -1), (-1, 0, 1), (0, 1, 1), (1, 0, 1), (1, 1, -1)}.at n=8A150589
• Triangle, read by rows, T(n, k) = binomial(3*n, 2*k) + binomial(3*n, 2*(n-k)).at n=22A154919
• Triangle, read by rows, T(n, k) = binomial(3*n, 2*k) + binomial(3*n, 2*(n-k)).at n=26A154919
• Number of integer partitions of n without all different sums of two-element submultisets.at n=43A366753
• a(n) is the number of 5 element sets of distinct integer-sided trapezoids whose base angles are 60 degrees that fill an equilateral triangular grid of side n units formed by directly binary space partitioning 3-trapezoid sets without forming 4-trapezoid sets.at n=45A391203