47294
domain: N
Appears in sequences
- a(n) = 2nd elementary symmetric function of the first n+1 positive integers congruent to 1 mod 4.at n=11A024378
- E.g.f.: (1-3*exp(x)+exp(2*x))/(exp(x)-2).at n=7A052856
- n such that A205592(n) > n.at n=26A205594
- Numbers k such that there are precisely 8 groups of orders k and k + 1.at n=3A295993
- Number of binary matrices with nonzero rows, a total of n ones and each column with the same number of ones.at n=6A331637
- a(n) = Sum_{k=0..n} (k+1) * 8^k * binomial(2*n+1,n-k).at n=4A386956