480624

Appears in sequences

• a(n) = (n + 1)*(n + 2)*(n + 4)*(n + 8)*(n + 15)/120.at n=30A006636
• Partial sums of A050405.at n=13A052206
• a(n) = ((7*n+10)(!^7))/10(1^7), related to A034830 (((7*n+3)(!^7))/3 sept-, or 7-factorials).at n=4A053106
• Numbers k such that the product of Euler phi of the 2 consecutive integers {k,k+1} is a 4th power: if sqrt(sqrt(phi(k)*phi(k+1))) is an integer, then k is here.at n=24A082788
• Number of side-2 hexagonal 0..n arrays with values nondecreasing E, SW and SE.at n=14A216938