Numbers k where the root mean square (RMS) of k and 7 is an integer, i.e., sqrt((k^2 + 7^2)/2) is an integer.
A076293
Numbers k where the root mean square (RMS) of k and 7 is an integer, i.e., sqrt((k^2 + 7^2)/2) is an integer.
Terms
- a(0) =1a(1) =7a(2) =17a(3) =23a(4) =49a(5) =103a(6) =137a(7) =287a(8) =601a(9) =799a(10) =1673a(11) =3503a(12) =4657a(13) =9751a(14) =20417a(15) =27143a(16) =56833a(17) =118999a(18) =158201a(19) =331247a(20) =693577a(21) =922063a(22) =1930649a(23) =4042463a(24) =5374177a(25) =11252647a(26) =23561201a(27) =31322999a(28) =65585233a(29) =137324743
External references
- oeis: A076293