53125

Appears in sequences

• A convolution triangle of numbers obtained from A025750.at n=32A049223
• T(n,5), array T as in A050186; a count of aperiodic binary words.at n=20A050190
• Numbers j that are the hypotenuse of exactly 16 distinct integer-sided right triangles, i.e., j^2 can be written as a sum of two squares in 16 ways.at n=1A097238
• Concatenate n and the sum of the digits of n raised to their own power (A045503).at n=5A108302
• Numerator of sum of reciprocals of first n 5-simplex numbers A000389.at n=19A118431
• The least n-digit multiple of 5^n using the decimal digits {1, 2, 3, 4, 5} exclusively.at n=4A140288
• G.f. satisfies: A(x) = 1 + x + 3*x*A(x) + x*A(x)^2.at n=6A200031
• Number of compositions of n where the difference between largest and smallest parts equals 7 and adjacent parts are unequal.at n=17A214276
• Numbers k that divide 5^k + 3^k + 2^k.at n=16A220170
• Smallest odd number greater than any previous term such that it divides the concatenation of all the previous terms and itself; begin with 1.at n=21A228806
• Triangle read by rows: T(n,k) is the coefficient A_k in the transformation Sum_{k=0..n} (k+1)*x^k = Sum_{k=0..n} A_k*(x-2)^k.at n=49A246797
• a(n) = n^2*(7*n - 5)/2.at n=25A262000
• Consider a number x = concat(a,b). Sequence lists numbers x such that digits of b^a end in x.at n=26A266818
• Numbers m such that m = p^2 + k^2, with p > 0, where p = A007954(m) = the product of digits of m.at n=28A334557
• Irregular triangle read by rows: T(n,k) (0 <= k <= n^2) are coefficients of exact wrapping probability for site percolation on an n X n 2D nnsquare lattice with periodic boundary conditions. This is for the probability that it wraps around the vertical dimension.at n=54A366464
• Irregular triangle read by rows: T(n,k) (0 <= k <= n^2) are coefficients of exact spanning probability for site percolation along the second dimension for an n X n 2D nnsquare lattice with periodic boundary conditions.at n=54A366467
• a(n) is the (n-1)-st frugal number in base n.at n=34A379539