60099

Appears in sequences

• a(n) = n*(2*n^2 + n + 1)/2.at n=38A085786
• Expansion of (1+2x^2)/(1-x-4x^5).at n=24A098524
• 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, 0), (-1, 1, 0), (0, 0, 1), (1, 0, 0)}.at n=10A149855
• a(n) = pg(n, 3) + pg(n, 4) + ... + pg(n, n) where pg(n, m) is the m-th n-th-order polygonal number.at n=25A245679
• Absolute discriminants of complex quadratic fields with 3-class group of type (3,3), 3-principalization type (2143), IPAD [(3,9)^4], and Hilbert 3-class field tower of unknown length at least 3.at n=3A247688
• a(n) is the number of ways to write prime(n) as a sum of distinct composites.at n=32A381251