20096
domain: N
Appears in sequences
- Expansion of e.g.f. of arctan(sec(x)*arcsinh(x)) (odd coefficients only).at n=4A012825
- Expansion of e.g.f. log(cosh(x) + arcsin(x)).at n=9A013186
- Trajectory of 15 under the map k -> A003415(k) (taking the arithmetic derivative).at n=12A090636
- Trajectory of 28 under the map k -> A003415(k) (taking the arithmetic derivative).at n=9A090637
- a(1) = 1+2-3 = 0, a(2) = 4+5+6-7 = 8, a(3) = 8+9+10+11-12 = 26, a(4) = 13+14+15+16+17-18 = 57, ...at n=32A111694
- The n-th arithmetic derivative of 2^3.at n=11A129150
- Nonnegative values x of solutions (x, y) to the Diophantine equation x^2+(x+457)^2 = y^2.at n=7A129642
- Maxima in A163169.at n=43A163172
- (A192533)/2.at n=33A192534
- Principal diagonal of the convolution array A213838.at n=15A213839
- Number of idempotent 3X3 0..n matrices.at n=38A222822
- Number of ways to put n red, n blue, and n green balls into n indistinguishable boxes.at n=5A254811
- Number A(n,k) of factorizations of m^n into at most n factors, where m is a product of exactly k distinct primes; square array A(n,k), n>=0, k>=0, read by antidiagonals.at n=41A256384
- Eighth arithmetic derivative of n.at n=32A258648
- Ninth arithmetic derivative of n.at n=16A258649
- Ninth arithmetic derivative of n.at n=28A258649
- Tenth arithmetic derivative of n.at n=12A258650
- Tenth arithmetic derivative of n.at n=39A258650
- Tenth arithmetic derivative of n.at n=55A258650
- Number of trapezoidal words of length n.at n=50A260881