427370
domain: N
Appears in sequences
- Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 42.at n=27A031630
- Triangle read by rows: Coefficients of the Eulerian polynomials EC(n, x)*EZ(n, x), where EC denote the classical Eulerian and EZ the zig-zag Eulerian polynomials.at n=37A373434
- Triangle read by rows: Coefficients of the Eulerian polynomials EC(n, x)*EZ(n, x), where EC denote the classical Eulerian and EZ the zig-zag Eulerian polynomials.at n=38A373434