21329

Appears in sequences

• 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, 0), (0, 1, -1), (1, 0, -1), (1, 1, 1)}.at n=8A149686
• Partial sums of floor(n^3/3).at n=22A173707
• Numbers of the form HMMSS with primes H < 24 and MM, SS < 60, for which the number of seconds after midnight, 3600*H+60*MM+SS, is also prime.at n=29A295011
• Numbers that are the sum of four fourth powers in exactly two ways.at n=45A344193
• Triangle read by rows: T(n,k) is the number of nested cycle partitions of n labeled nodes into k components.at n=31A392471