219600
domain: N
Appears in sequences
- Jordan function J_4(n).at n=21A059377
- Consider all consecutive integer Pythagorean 9-tuples (X, X+1, X+2, X+3, X+4, Z-3, Z-2, Z-1, Z) ordered by increasing Z; sequence gives X values.at n=4A157092
- Jordan function J_{-4} multiplied by n^4.at n=21A189922
- Size (b^3_n) of unit sphere in a certain graph (see Hazama article for precise definition).at n=25A199935
- Expansion of a(q)^2 * (c(q)/3)^3 in powers of q where a(), c() are cubic AGM theta functions.at n=21A266288
- a(n) is the number of invertible 2 X 2 upper triangular matrices over Z_p where p = prime(n).at n=17A270775
- Coreful triperfect numbers: numbers k such that csigma(k) = 3*k, where csigma(k) is the sum of the coreful divisors of k (A057723).at n=17A364990
- Exponential abundant numbers that are not exponential unitary abundant.at n=31A391085
- Exponential Zumkeller numbers that are not exponential unitary Zumkeller numbers.at n=34A391090