78960

Appears in sequences

• a(n) = (n+1)*(2*n+1)*(3*n+1).at n=23A011199
• a(n) = floor( n*(n-1)*(n-2)*(n-3)/25 ).at n=39A011935
• Smallest magic constant for any n X n magic square made from consecutive primes, or 0 if no such magic square exists.at n=27A073520
• a(n) = n-th multiple of n with digit sum n.at n=29A082260
• Sum(prime(k),k=1..n)^2-1.at n=13A092780
• 75-gonal numbers: a(n) = n*(73*n-71)/2.at n=47A098230
• a(n) = Sum_{k=1..n} k*(prime(k) - k).at n=34A110477
• Numbers with prime factorization p*q*r*s*t^4 (where p, q, r, s, t are distinct primes).at n=25A190110
• The number of cycles in the digraph representation of all endofunctions on {1,2,...,n}.at n=6A190314
• Smallest magic sum for any n X n semimagic square made from consecutive primes, or 0 if no such magic square exists.at n=27A270829
• Numbers of the form p^2 - 1 where p is a prime of the form 3*k-1 (A003627).at n=31A301812
• a(n) = smallest potential magic constant for an n X n magic square composed of consecutive primes.at n=27A342124
• Numbers k such that k*A001414(k)+1 is the square of a prime.at n=35A343141
• Numbers sandwiched between two semiprimes, one of which is a square.at n=43A358686
• Expansion of e.g.f. 1/(1 + 2 * x * log(1-x)).at n=7A367878