Convolution of level 2 of the divisor function.

Terms

a(0) =0a(1) =0a(2) =1a(3) =3a(4) =7a(5) =16a(6) =22a(7) =45a(8) =49a(9) =100a(10) =95a(11) =178a(12) =161a(13) =304a(14) =250a(15) =465a(16) =372a(17) =676a(18) =525a(19) =952a(20) =720a(21) =1280a(22) =946a(23) =1702a(24) =1217a(25) =2156a(26) =1570a(27) =2764a(28) =1925a(29) =3376