143445

Appears in sequences

• Octagonal numbers for which the sum of the digits is also an octagonal number.at n=19A117082
• 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, 0, 1), (1, 0, 0), (1, 1, -1)}.at n=13A148087
• Half the number of length n integer sequences with sum zero and sum of squares 800.at n=4A157552
• a(n) = 3*a(n-1) + 6*a(n-2) + a(n-3), with a(0) = 3, a(1) = 3, and a(2) = 21.at n=8A214778