Number of walks on cubic lattice.

Terms

a(0) =17a(1) =50a(2) =99a(3) =164a(4) =245a(5) =342a(6) =455a(7) =584a(8) =729a(9) =890a(10) =1067a(11) =1260a(12) =1469a(13) =1694a(14) =1935a(15) =2192a(16) =2465a(17) =2754a(18) =3059a(19) =3380a(20) =3717a(21) =4070a(22) =4439a(23) =4824a(24) =5225a(25) =5642a(26) =6075a(27) =6524a(28) =6989a(29) =7470