Cumulative sums of the first ceiling(n/2)+1 elements of rows 0 to n in Pascal's triangle.

Terms

a(0) =1a(1) =3a(2) =6a(3) =13a(4) =24a(5) =50a(6) =92a(7) =191a(8) =354a(9) =736a(10) =1374a(11) =2860a(12) =5370a(13) =11182a(14) =21090a(15) =43909a(16) =83112a(17) =172958a(18) =328340a(19) =682862a(20) =1299528a(21) =2700820a(22) =5150688a(23) =10697070a(24) =20437756a(25) =42415272a(26) =81170004a(27) =168337168a(28) =322613196a(29) =668607412