Sum of squares of numbers that can be written as t*n + u*(n+1) for nonnegative integers t,u in exactly n ways.
A076465
Sum of squares of numbers that can be written as t*n + u*(n+1) for nonnegative integers t,u in exactly n ways.
Terms
- a(0) =1a(1) =571a(2) =12938a(3) =115270a(4) =630755a(5) =2543401a(6) =8307796a(7) =23249388a(8) =57792165a(9) =130790935a(10) =274285726a(11) =540036146a(12) =1008233863a(13) =1798831685a(14) =3085968040a(15) =5116005976a(16) =8229746121a(17) =12889413363a(18) =19711057330a(19) =29503047070a(20) =43311380651a(21) =62472570721a(22) =88674907388a(23) =124028940100
External references
- oeis: A076465