86940
domain: N
Appears in sequences
- Triangle read by rows: matrix cube of the Stirling2 triangle A008277.at n=41A039811
- Triangle read by rows: matrix 4th power of the Stirling2 triangle A008277.at n=32A039812
- Triangle read by rows, the Bell transform of (n+2)!/2 without column 0.at n=41A046089
- a(n) = Sum_{k=1..prime(n)-1} floor(k^3/prime(n)).at n=19A078837
- a(0) = 1, a(1) = 1 and for n >= 2, a(n) = floor(4 * a(n-2) * a(n-1) / (a(n-2) + a(n-1))).at n=27A093335
- Numbers n such that n*((2^61-1)^3) - 1 and n*((2^61-1)^3) + 1 are twin primes.at n=6A099230
- a(n) = Bell(n) * Fibonacci(n).at n=8A140588
- Numbers with prime factorization p*q*r*s^2*t^3 (where p, q, r, s, t are distinct primes).at n=24A190111
- Molecular topological indices of the prism graphs Y_n.at n=29A192838
- Principal diagonal of the convolution array A213819.at n=34A213820
- Number of set partitions of [n] with increasing block sizes.at n=14A275312
- Numbers such that the decimal digits of sigma(n) are a permutation of those of sigma(n)-n.at n=30A277114
- The number of e-perfect numbers below 10^n.at n=6A307822
- Expansion of (1/x) * Series_Reversion( x * (1+x^2/(1-x))^2 ).at n=13A369076