Total number of ones in runs of 1's of length >= 4 over all binary strings of length n.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =4a(5) =13a(6) =36a(7) =92a(8) =224a(9) =528a(10) =1216a(11) =2752a(12) =6144a(13) =13568a(14) =29696a(15) =64512a(16) =139264a(17) =299008a(18) =638976a(19) =1359872a(20) =2883584a(21) =6094848a(22) =12845056a(23) =27000832a(24) =56623104a(25) =118489088a(26) =247463936a(27) =515899392a(28) =1073741824a(29) =2231369728