390432

Appears in sequences

• Numbers n such that sigma(phi(n))-phi(n) = phi(sigma(n)-n).at n=20A132793
• A partition product of Stirling_1 type [parameter k = 4] with biggest-part statistic (triangle read by rows).at n=30A157394
• Recurrence a(n) = a(n-2) + n^M for M=5, starting with a(0)=0, a(1)=1.at n=12A231304
• Sum of fifth powers of the first n even numbers.at n=6A265021