31412
domain: N
Appears in sequences
- a(n) = 1 + a(floor(n/2))*a(ceiling(n/2)) for n > 1, a(1) = 3.at n=8A005510
- From George Gilbert's marks problem: jumping 4 marks at a time (initial positions).at n=22A019595
- Number of partitions of n into parts not of the form 15k, 15k+2 or 15k-2. Also number of partitions with 1 part of size 1 and differences between parts at distance 6 are greater than 1.at n=47A035956
- Numbers n such that 227*2^n-1 is prime.at n=23A050865
- Number of nXnXn triangular 0..6 arrays with every horizontal row nondecreasing and having the same average value.at n=4A214904
- T(n,k)=Number of nXnXn triangular 0..k arrays with every horizontal row nondecreasing and having the same average value.at n=49A214906
- Number of 5X5X5 triangular 0..n arrays with every horizontal row nondecreasing and having the same average value.at n=5A214909
- Numbers that are the sum of seven fourth powers in eight or more ways.at n=11A345574
- Numbers that are the sum of seven fourth powers in exactly eight ways.at n=6A345830