Number of integer-sided hexagons having perimeter n.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =1a(6) =1a(7) =4a(8) =7a(9) =15a(10) =25a(11) =46a(12) =72a(13) =113a(14) =172a(15) =248a(16) =360a(17) =491a(18) =686a(19) =896a(20) =1217a(21) =1536a(22) =2031a(23) =2504a(24) =3236a(25) =3905a(26) =4955a(27) =5880a(28) =7336a(29) =8586