100727

Appears in sequences

• Odd numbers m such that for all 2^k < m the numbers m + 2^k, m - 2^k, m*2^k + 1, and m*2^k - 1 are composite, with k >= 1.at n=10A256163
• a(n) = n^4 + 3*n^3 + 8*n^2 + 9*n + 2.at n=17A270868