153461

Appears in sequences

• Each term is previous term plus floor of harmonic mean of two previous terms.at n=22A114831
• a(n) = (9*n^4+10*n^3-3*n^2-4*n)/12.at n=21A172045
• On a spirally numbered square grid, with labels starting at 1, this is the number of the last cell that a (1,n) leaper reaches before getting trapped, or -1 if it never gets trapped.at n=28A323471