4*P_5(n), 4 times the Legendre Polynomial of order 5 at n.

Terms

a(0) =0a(1) =4a(2) =743a(3) =6732a(4) =30046a(5) =94100a(6) =237429a(7) =517468a(8) =1014332a(9) =1834596a(10) =3115075a(11) =5026604a(12) =7777818a(13) =11618932a(14) =16845521a(15) =23802300a(16) =32886904a(17) =44553668a(18) =59317407a(19) =77757196a(20) =100520150a(21) =128325204a(22) =161966893a(23) =202319132a(24) =250338996a(25) =307070500a(26) =373648379