94635domain: NAppears in sequencesDenominators a(n) of Pythagorean approximations b(n)/a(n) to 5/2.at n=3A195553Numerators b(n) of Pythagorean approximations b(n)/a(n) to 2/5.at n=6A195575Odd numbers divisible by 3 which are neither of the form p + 3^m + 1 nor of the form p + 3^m - 1 with p prime.at n=16A282191