62920

Appears in sequences

• Partial sums of A050483.at n=9A052181
• Partial sums of A050405.at n=9A052206
• Starting positions of strings of four 2's in the decimal expansion of Pi.at n=6A083607
• Tenth column (m=9) of (1,4)-Pascal triangle A095666.at n=8A095819
• Number of returns to the x-axis (i.e., d or u steps hitting the x-axis) in all Grand Motzkin paths of length n. (A Grand Motzkin path of length n is a path in the half-plane x>=0, starting at (0,0), ending at (n,0) and consisting of steps u=(1,1), d=(1,-1) and h=(1,0).).at n=9A109194
• Triangular array read by row: T(m,n) = number of ways to obtain a single sphere by gluing the (labeled) sides of a (2m+1)-gon and a (2n+1)-gon, m >= n >= 0.at n=23A297897
• Expansion of Product_{k>=1} (1 + 4*x^k)/(1 - 4*x^k).at n=7A303391
• Numbers k that are divisible by sum(pi)^2+sum(ei) where k=p1^e1*...*pj^ej with pi primes.at n=41A321456
• a(n) is the number of subsets of {1..n} that contain 3 even and 3 odd numbers.at n=25A331574
• Irregular triangle read by rows: T(n, k) is the q-multinomial coefficient defined by the k-th partition of n in Abramowitz-Stegun order, evaluated at q = 3.at n=16A347486
• a(n) = C(n, Q(n+3, 4)-1)*C(n, Q(n+1, 4)) + C(n, Q(3*n+1, 4))*C(n, Q(3*n+3, 4)) where C = binomial and Q(x, y) = floor(x/y).at n=12A380121