272084domain: NAppears in sequencesPowers of fourth root of 19 rounded to nearest integer.at n=17A018100Powers of fourth root of 19 rounded up.at n=17A018101Number of nondecreasing arrangements of 7 numbers x(i) in -(n+5)..(n+5) with the sum of sign(x(i))*x(i)^2 zero.at n=23A188007