-1607

Appears in sequences

• Bond series for first parallel moment of hexagonal net.at n=20A120542
• a(n) = A174817(n) - Mnr; where Mnr = A001228(26) = 808017424794512875886459904961710757005754368000000000, also called the Monster number, cf. A003131.at n=28A174818
• Values of n such that L(4) and N(4) are both prime, where L(k) = (n^2+n+1)*2^(2*k) + (2*n+1)*2^k + 1, N(k) = (n^2+n+1)*2^k + n.at n=27A226924
• Coefficients in expansion of 1/(1 + x - 2*x^5).at n=27A317509