45720

Appears in sequences

• Number of nonnegative solutions of x1^2 + x2^2 + ... + x10^2 = n.at n=27A045852
• Smallest number having exactly n divisors that are not greater than the number's greatest prime factor.at n=22A087134
• Number of compositions of n where differences between neighboring parts are in {-2,...,2}.at n=18A214255
• Govindarajan's triangle F^{box 2} arising in enumeration of multi-dimensional partitions, read by rows.at n=70A216809
• Numbers k such that the sum of the norm of divisors of k in Gaussian integers is divisible by k.at n=39A332736
• Place two n-gons with radii 1 and 2 concentrically, forming an annular area between them. Connect all the vertices with line segments that lie entirely within that area. Then a(n) is the number of vertices in that figure.at n=33A337701
• Expansion of e.g.f. 1/(1 + (log(1 - x^2))/x)^3.at n=6A375807
• Number of strict integer compositions of n whose leaders of increasing runs are increasing.at n=41A376263
• Numbers k such that A380845(k) > 3*k.at n=28A380930
• Smallest number whose largest odd noncomposite divisor is its n-th divisor.at n=22A384232