168640
domain: N
Appears in sequences
- Expansion of e.g.f.: exp(x)/cosh(tanh(x)).at n=9A009298
- Expansion of e.g.f. sin(x)/cos(tan(x)) (odd powers only).at n=4A009555
- Weight distribution of [256,21,112] extended binary primitive BCH (or XBCH) code.at n=14A151618
- Weight distribution of [256,21,112] extended binary primitive BCH (or XBCH) code.at n=18A151618
- Number of -n..n arrays x(0..3) of 4 elements with zero sum and no two or three adjacent elements summing to zero.at n=31A200431
- Triangle read by rows: T(n,m) is the number of direct-sum decompositions of a finite vector space of dimension n with m blocks over GF(2).at n=18A270880
- a(n) is the smallest number with exactly n divisors that are centered triangular numbers.at n=8A358544