55361
domain: N
Appears in sequences
- a(n) = floor( n*(n-1)*(n-2)*(n-3)/32 ).at n=38A011942
- Indices of primes in sequence defined by A(0) = 31, A(n) = 10*A(n-1) + 11 for n > 0.at n=14A101828
- Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 0 1 0 vertically.at n=4A207420
- Number of nX5 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 0 1 0 vertically.at n=4A207423
- T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 0 1 0 vertically.at n=40A207426
- Number of 5Xn 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 0 1 0 vertically.at n=4A207429
- Numbers n such that n, n + 1, n + 2, n + 3 and n + 4 are products of exactly three primes.at n=34A268588
- Number of integer partitions of n with sortable prime factors.at n=45A326333