Sum of squares of numbers that can be written as t*n + u*(n+1) for nonnegative integers t,u in exactly five ways.
A076464
Sum of squares of numbers that can be written as t*n + u*(n+1) for nonnegative integers t,u in exactly five ways.
Terms
- a(0) =145a(1) =4567a(2) =38570a(3) =183670a(4) =630755a(5) =1751365a(6) =4187092a(7) =8957100a(8) =17583765a(9) =32236435a(10) =55893310a(11) =92521442a(12) =147274855a(13) =226710785a(14) =339024040a(15) =494299480a(16) =704782617a(17) =985168335a(18) =1352907730a(19) =1828533070a(20) =2436000875a(21) =3203053117a(22) =4161596540a(23) =5348100100a(24) =6804010525
External references
- oeis: A076464