28975
domain: N
Appears in sequences
- Spiral sieve using Fibonacci numbers.at n=21A005623
- Number of 5-leaf rooted trees with n levels.at n=18A007715
- G.f. satisfies A(x) = 1 + x*cycle_index(G,A(x)) where G = cyclic group of order 7 generated by (1,2,...,7).at n=9A036728
- a(n) = ((5 + 2*sqrt(2))*(3 + sqrt(2))^n + (5 - 2*sqrt(2))*(3 - sqrt(2))^n)/2.at n=6A163609
- Numbers which are the sums of consecutive fifth powers.at n=26A217845
- -5-Knödel numbers.at n=29A225509
- G.f. = b(2)*b(4)*b(6)/(x^8-x^3-x+1), where b(k) = (1-x^k)/(1-x).at n=23A266338
- Sum T(n,k) of the entries in the k-th blocks of all set partitions of [n]; triangle T(n,k), n>=1, 1<=k<=n, read by rows.at n=41A285362
- Sum of the entries in the sixth blocks of all set partitions of [n].at n=3A285368
- Numbers k such that k and k+1 have the same sum of 5-smooth divisors.at n=19A355713
- Numbers k such that d(k) > d(k+1) > d(k+2) > d(k+3) > d(k+4), where d(n) is the number of divisors of n.at n=1A364720
- Array read by ascending antidiagonals: A(n, k) = HurwitzZeta(-n, k) - HurwitzZeta(-n, k+n) with k >= 0.at n=39A391310