A084938 * [1,2,3,...], where A084938 is taken as lower triangular matrix.

A134378

A084938 * [1,2,3,...], where A084938 is taken as lower triangular matrix.

Terms

    a(0) =1a(1) =2a(2) =5a(3) =14a(4) =44a(5) =158a(6) =663a(7) =3310a(8) =19759a(9) =139660a(10) =1147120a(11) =10729684a(12) =112309193a(13) =1297522650a(14) =16371057801a(15) =223716758346

External references