28713

Appears in sequences

• Powers of rooted tree enumerator.at n=14A000529
• Numbers k such that x^k + x + 1 is irreducible over GF(2).at n=33A002475
• Sum of diagonal elements and those below it for a square matrix of integers, starting with 1.at n=16A066804
• 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, 1, 0), (0, 1, 1), (1, 0, -1), (1, 0, 0)}.at n=8A150256
• Constant term of the reduction by x^2->x+1 of the polynomial p(n,x)=1+x^n+x^(2n+2).at n=10A192472
• a(n) = 3^n - A006952(n).at n=20A304082
• a(n) is the largest integer k such that there is an integer m with exactly n nonunitary prime factors and m + A005117(i) is squarefree for 1 <= i <= k.at n=23A390138