146509

Appears in sequences

• Number of (n+2)X4 0..2 matrices with each 3X3 subblock idempotent.at n=19A224600
• O.g.f. A(x) satisfies: 0 = [x^n] exp( n^2 * Integral 1/A(x)^2 dx ) / A(x), for n > 0.at n=6A305147