53862

Appears in sequences

• 'Core' alternating sign n X n matrices, i.e., those that are not 'blown up' from a smaller matrix by inserting row i, column j with a_ij = 1 and all other entries in that row and column equal to 0.at n=4A003827
• Product of the first n 3-almost primes, divided by product of the first n primes, rounded down.at n=13A122032
• Number of (n+4) X 9 0..2 matrices with each 5 X 5 subblock idempotent.at n=7A224622