The seventh Euler transform of the sequence with g.f. 1+x.

Terms

a(0) =1a(1) =1a(2) =7a(3) =28a(4) =140a(5) =602a(6) =2772a(7) =12166a(8) =54046a(9) =236093a(10) =1030101a(11) =4458247a(12) =19223202a(13) =82448782a(14) =352247250a(15) =1498724840a(16) =6353940527a(17) =26844401919a(18) =113051495750a(19) =474652297902