58920

Appears in sequences

• Values of n such that N=(an+1)(bn+1)(cn+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,33.at n=14A064253
• First occurrence of n in A084501.at n=10A084507
• a(n) = Sum_{i=1..n, j=1..n, gcd(i,j)=1} (n+1-i)*(n+1-j).at n=23A115004
• 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), (0, 1, -1), (0, 1, 0), (1, -1, 1)}.at n=10A148433
• Number of non-monotonic functions from [k] to [n-k].at n=43A189711
• Absolute discriminants of complex quadratic fields with 3-class group of type (3,3) and Hilbert 3-class field tower of exact length 3, except for the cases mentioned in the COMMENTS.at n=28A242878
• Numbers k such that 41*10^k - 1 is prime.at n=19A294920
• Expansion of e.g.f. 1/(1 - x^3/6 * (exp(x) - 1)).at n=10A353999
• Expansion of e.g.f. -LambertW(x^3/6 * (1 - exp(x))).at n=10A355308
• Numbers k such that sigma(k + sigma(k)) = sigma(k) + sigma(sigma(k)), where sigma = A000203.at n=1A376831