119341
domain: N
Appears in sequences
- Strong pseudoprimes to base 14.at n=28A020240
- Strong pseudoprimes to base 39.at n=34A020265
- Strong pseudoprimes to base 47.at n=32A020273
- Strong pseudoprimes to base 80.at n=29A020306
- Number of permutations of [n] avoiding {4231, 1423, 1234}.at n=13A294765
- a(n) = Sum_{k=0..floor(2*n/7)} binomial(3*k,2*n-7*k).at n=28A392436