Even numbers in the triangle of Stirling numbers of the second kind (A008277).

Terms

a(0) =6a(1) =10a(2) =90a(3) =350a(4) =140a(5) =966a(6) =1050a(7) =266a(8) =28a(9) =7770a(10) =2646a(11) =462a(12) =36a(13) =9330a(14) =5880a(15) =750a(16) =145750a(17) =246730a(18) =11880a(19) =86526a(20) =1379400a(21) =1323652a(22) =627396a(23) =66a(24) =2532530a(25) =9321312a(26) =5715424a(27) =1899612a(28) =359502a(29) =78