-2607

Appears in sequences

• Triangular matrix, read by rows, where row n is formed from the first differences of row (n-1) of its inverse matrix square, with an appended '1' for the main diagonal.at n=25A102583
• Expansion of -(3 - x + 2*x^2) / (1 - x^3 + x^4).at n=42A110063
• Values of n such that L(3) and N(3) 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=59A226923
• a(n) gives the A-sequence for the Riordan matrix (1/(1 + x^2 - x^3), x/(1 + x^2 - x^3)) from A321196.at n=14A321197