Number of cliques in the n-triangular graph.

Terms

a(0) =1a(1) =2a(2) =8a(3) =27a(4) =76a(5) =192a(6) =456a(7) =1045a(8) =2344a(9) =5186a(10) =11364a(11) =24719a(12) =53444a(13) =114948a(14) =246096a(15) =524713a(16) =1114640a(17) =2359942a(18) =4981516a(19) =10486691a(20) =22021196a(21) =46138632a(22) =96470488a(23) =201328317a(24) =419432376a(25) =872417482a(26) =1811941876a(27) =3758099255a(28) =7784631444a(29) =16106130956