124410
domain: N
Appears in sequences
- Coordination sequence for A_4 lattice.at n=22A008383
- a(n) = n*(n^4-1)/2.at n=10A027484
- Triangle of Fibonomial coefficients (k=2).at n=31A034801
- Triangle of Fibonomial coefficients (k=2).at n=32A034801
- Products of exactly 6 distinct primes.at n=32A067885
- Number of integer sequences of length n+1 with sum zero and sum of absolute values 44.at n=3A157071
- Lower Pythagorean twins.at n=37A228876
- Expansion of exp( Sum_{n >= 1} L(2*n)*L(4*n)*x^n/n ), where L(n) = A000032(n) is a Lucas number.at n=4A256178
- Squarefree numbers k such that alpha(k) = lambda(k), where alpha(k) = LCM of all (p+1) for primes p dividing k, and lambda(k) = A002322(k).at n=17A287514
- Matula-Goebel numbers of transitive rooted identity trees (or transitive finitary sets).at n=33A290760
- Irregular triangle read by rows: T(n,k) is the number of permutations of {1,2,...,n} with cycle descent number equal to k.at n=32A349106