1528823808

Appears in sequences

• Three people (P1, P2, P3) are in a circle and are saying Hello to each other. They start with P2 saying "Hello, Hello". Thereafter Pn says "Hello" for n times the total number of Hello's so far.at n=20A076507
• Expansion of 2*x*(1+4*x+8*x^2)/(1-24*x^3).at n=19A076508
• a(n) = n^3*2^n.at n=18A128789
• Write exp(-x) = Product_{n>=1} (1 + g_n x^n); a(n) = denominator(g_n).at n=23A170911
• Array read by antidiagonals: total number of spanning trees R_n(m) of the complete prism K_m X C_n.at n=24A175243
• A coding sequence of binary based integers using powers of {2,3} for {0,1}.at n=15A176904
• a(n) = phi(n^7).at n=23A239442
• Number of nX2 arrays of permutations of 0..n*2-1 with rows nondecreasing modulo 2 and columns nondecreasing modulo 6.at n=10A264702
• a(n) is denominator of rational z(n) associated with the non-orientable map asymptotics constant p((n+1)/2).at n=8A278121
• a(n) = A046523(A243103(n)).at n=39A283990
• 3-smooth numbers of the form (ab+1)(ac+1), a > b > c > 0.at n=10A320883
• Terms of A025487 from which the distance to the next larger prime is a composite number.at n=28A329894
• Powers k^m, m > 1, where k is an Achilles number that is a product of primorials.at n=25A389260
• Powers k^m, m > 2, where k is an Achilles number.at n=16A390436