20235

Appears in sequences

• Denominators of continued fraction convergents to sqrt(567).at n=8A042087
• a(1) = 1, and for each k >=2, a(k) is the smallest number n such that n/sin(n) > a(k)/sin(a(k)), so that a(1)/sin(a(1)) > a(2)/sin(a(2)) > ... > a(k)/sin(a(k)) > ...at n=42A172445
• Numbers k such that k^3 divides 14^(k^2) + 1.at n=20A177814
• Numbers whose sum of triangular divisors is also a divisor and greater than 1.at n=26A209311
• Sum of all odd numbers in Collatz (3x+1) trajectory of n.at n=40A213916
• a(n) = n*(n + 1)*(n + 2)*(3*n + 17)/24.at n=18A241765
• Products of two distinct tribonacci numbers > 1.at n=43A274433
• Fixed points of A275957; numbers n for which A060125(n) = A225901(n).at n=46A275843
• Number of nX4 0..1 arrays with every element unequal to 0, 2, 3, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero.at n=4A316928
• Number of nX5 0..1 arrays with every element unequal to 0, 2, 3, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero.at n=3A316929
• T(n,k)=Number of nXk 0..1 arrays with every element unequal to 0, 2, 3, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero.at n=31A316932
• T(n,k)=Number of nXk 0..1 arrays with every element unequal to 0, 2, 3, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero.at n=32A316932
• Number of nX5 0..1 arrays with every element unequal to 0, 2, 3, 4, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.at n=3A317700
• T(n,k)=Number of nXk 0..1 arrays with every element unequal to 0, 2, 3, 4, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.at n=31A317703
• T(n,k)=Number of nXk 0..1 arrays with every element unequal to 0, 2, 3, 4, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.at n=32A317703
• G.f. A(x) satisfies 3*x = Sum_{n=-oo..+oo} (-1)^n * x^(3*n) * (A(x) + x^n)^(3*n) with A(0) = 1.at n=8A380682