861840

Appears in sequences

• Smallest k such that d(phi(k)) - phi(d(k)) = -n, where d(k) = A000005(k) and phi(k) = A000010(k).at n=16A078151
• Absolute value of determinant of n X n matrix whose entries are the integers from 1 to n^2 spiraling outward, ending in a corner.at n=5A079340
• Number of circular permutations of 2n letters that are free of jealousy.at n=6A089039
• Dimensions of the irreducible representations of the simple Lie algebra of type E7 over the complex numbers, listed in increasing order.at n=24A121736
• Highly composite numbers of class 4 (see comment in A275239).at n=33A275242
• Number of 2 X 2 matrices with entries in {0,1,...,n} and even trace with no entries repeated.at n=37A280056
• Bi-unitary arithmetic numbers k whose mean bi-unitary divisor is a bi-unitary divisor of k.at n=29A361787