123292

Appears in sequences

• a(n) = Sum_{k=0..n-1} T(n,k) * T(n,2n-k), with T given by A027113.at n=8A027136
• Numbers n > 9 such that x^n + x^9 + x^8 + x^7 + x^6 + x^5 + x^4 + x^3 + x^2 + x +1 is irreducible over GF(2).at n=30A057487
• Sum over all partitions of n of the LCM of the parts.at n=25A181844
• Number of (n+2) X 3 0..2 matrices with each 3 X 3 subblock idempotent.at n=15A224599