388368

Appears in sequences

• Numbers k such that 28 plus the k-th triangular number is a perfect square.at n=13A154153
• Number of 2 X 2 nonsingular matrices having all terms in {1,...,n}.at n=24A211056
• a(n) = 3*a(n-1) + 4*a(n-2) + a(n-3) with a(0)=2, a(1)=5, a(2)=22.at n=9A215100