T(2n+5,n), array T as in A038792.

Terms

a(0) =1a(1) =7a(2) =30a(3) =103a(4) =314a(5) =895a(6) =2455a(7) =6590a(8) =17480a(9) =46070a(10) =121016a(11) =317342a(12) =831465a(13) =2177613a(14) =5702054a(15) =14929365a(16) =39087010a(17) =102332805a(18) =267912735a(19) =701406940a(20) =1836309856a(21) =4807524652a(22) =12586266400a(23) =32951277148a(24) =86267567969a(25) =225851430035