363720

Appears in sequences

• a(n) can be expressed as the difference of the squares of consecutive primes in just three distinct ways.at n=21A090783
• Triangle read by rows: T(n,k) is the number of functions f:{1,2,...,n}->{1,2,...,n} that have exactly k nonrecurrent elements mapped to some (one or more) recurrent element. n >= 1, 0 <= k <= n-1.at n=23A216971
• Expansion of (phi(x) / f(-x^4))^4 in powers of x where phi(), f() are Ramanujan theta functions.at n=34A227175