134922domain: NAppears in sequencesa(n) = a(n-1) + a(n-2) + 1 for n>1, a(0)=0, a(1)=1.at n=22A022311Floor-Sqrt transform of numbers of A051286.at n=27A192685Numbers m with m - 1, m + 1 and q(m) + 1 all prime, where q(.) is the strict partition function (A000009).at n=24A235344