378105

Appears in sequences

• Variant of triangle A008301, read by rows of 2*n+1 terms, such that the first column is the secant numbers (A000364).at n=29A125053
• Variant of triangle A008301, read by rows of 2*n+1 terms, such that the first column is the secant numbers (A000364).at n=31A125053
• Diagonal of symmetric triangle A125053 located immediately below the central terms (A125054).at n=4A125055
• Left half of triangle A125053.at n=19A210111
• Expansion of e.g.f. exp(x^2/(2 * sqrt(1-2*x))).at n=8A369941