72504

Appears in sequences

• q(n) = sigma(n) - n, where q(n) = n + e(n) + e(n-e(n)) and e(n) = n - eulerphi(n).at n=1A063935
• Number of 3 X 3 semimagic squares with distinct positive values and magic sum n.at n=22A173547
• Partial sums of number of different shapes formed by bending a piece of wire of length n in the plane A066372.at n=20A178937
• Numbers which divide the concatenation, in ascending order, of their anti-divisors.at n=33A249764
• a(n) = prime(n)^3 - prime(n^3).at n=14A262199
• Number of tilings of a 3 X n strip with dominos and U-shaped pentominos.at n=17A385242