Fourth right hand column of triangle A165674.

Terms

a(0) =50a(1) =154a(2) =342a(3) =638a(4) =1066a(5) =1650a(6) =2414a(7) =3382a(8) =4578a(9) =6026a(10) =7750a(11) =9774a(12) =12122a(13) =14818a(14) =17886a(15) =21350a(16) =25234a(17) =29562a(18) =34358a(19) =39646a(20) =45450a(21) =51794a(22) =58702a(23) =66198a(24) =74306a(25) =83050a(26) =92454a(27) =102542a(28) =113338a(29) =124866