114241

Appears in sequences

• Number of not-necessarily-symmetric n X 2 crossword puzzle grids.at n=12A034182
• Values of k such that {s(1),...,s(k)} is a palindrome, where {s(1),s(2),...} is the fixed point of the substitutions 0->1 and 1->110.at n=24A098894
• Expansion of (1+4*x+x^2)/((1-x^2)*(1-2*x-x^2)); a Pellian-related sequence.at n=12A114696
• a(n) = 128*n^2 - 32*n + 1.at n=29A157331
• a(n) = 128*n^2 + 2528*n + 12481.at n=19A157436
• a(1)=1, a(2)=17; thereafter a(n) = 6*a(n-1)-a(n-2)+c, where c=-4 if n is odd, c=12 if n is even.at n=6A184327
• Simple continued fraction expansion of product {k >= 0} (1 - 2*(N - sqrt(N^2-1))^(4*k+3))/(1 - 2*(N - sqrt(N^2-1))^(4*k+1)) at N = 3.at n=13A221193
• G.f.: Sum_{n>=0} 3^n * x^n / (1-x)^(2*n+1) * [Sum_{k=0..n} C(n,k)^2 * x^k]^2.at n=6A246539
• Base-5 representation of A000422(n).at n=3A353113
• Sum of the legs of the unique primitive Pythagorean triple (x,y,z) such that (x-y+z)/2 is A002315(n) and such that its long leg and its hypotenuse are consecutive natural numbers.at n=3A379508