40217

Appears in sequences

• Numerators of continued fraction convergents to sqrt(191).at n=8A041354
• Numerators of continued fraction convergents to sqrt(764).at n=10A042472
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 0, 0), (0, 1, 0), (1, 0, -1), (1, 1, 1)}.at n=8A150605
• a(n) = prime(n) * prime(2*n-1).at n=31A219603
• Self-inverse permutation of natural numbers: complementary pair ludic/nonludic numbers (A003309/A192607) entangled with the same pair in the opposite order, nonludic/ludic. See Formula.at n=62A235491