25583539

Appears in sequences

• Indices of hexagonal numbers which are also heptagonal.at n=3A048901
• Number of permutations satisfying -k <= p(i) - i <= r and p(i) - i not in I, i=1..n, with k=1, r=5, I={1,3}.at n=37A079962
• a(n+3) = 3*a(n+2) + 5*a(n+1) + a(n), a(0) = 0, a(1) = 1, a(2) = 3.at n=13A110526
• a(n) = a(n-1) + a(n-2) + 1 if n is a multiple of 6, otherwise a(n) = a(n-1) + a(n-2).at n=36A131132
• Number of (1,0)-steps of weight 1 at level 0 in all weighted lattice paths in L_n.at n=19A182890
• a(n) is the least integer k such that k/Fibonacci(n) > 1/4.at n=40A293552
• a(n) is the integer k that minimizes |k/Fibonacci(n) - 1/4|.at n=40A293553