-2123

Appears in sequences

• a(n) = 4^n - n^7.at n=3A024043
• Start with 2, then successively subtract the primes 3, 5, 7, ...at n=33A282329
• Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of exp(-Sum_{j>0} sigma_k(j)*x^j/j) in powers of x.at n=39A294947