40001698260domain: NAppears in sequencesNumerators of continued fraction convergents to sqrt(916).at n=20A042770a(n) = 15*a(n-1) + a(n-2), starting with a(0) = 2 and a(1) = 15.at n=9A090301Continued cotangent recurrence a(n+1)=a(n)^3+3*a(n) and a(1)=15.at n=2A145189a(n) = n*(n^2 + 3)*(n^6 + 6*n^4 + 9*n^2 + 3).at n=15A261574