66633

Appears in sequences

• Denominators of the continued fraction convergents of the decimal concatenation of the prime-indexed primes.at n=15A128851
• 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, -1), (-1, -1, 1), (-1, 0, 1), (1, 0, -1), (1, 1, 0)}.at n=10A148751
• Numbers k such that 28 plus the k-th triangular number is a perfect square.at n=11A154153
• Number of nX7 0..1 arrays with every element unequal to 0, 1 or 3 king-move adjacent elements, with upper left element zero.at n=21A303681