Pentagonal numbers with only even digits.

Terms

a(0) =0a(1) =22a(2) =2262a(3) =2882a(4) =8400a(5) =8626a(6) =40262a(7) =80620a(8) =86280a(9) =224460a(10) =244622a(11) =288862a(12) =442002a(13) =468442a(14) =606426a(15) =866020a(16) =2000460a(17) =2628802a(18) =4028662a(19) =4624426a(20) =4640242a(21) =4666662a(22) =6664442a(23) =8044626a(24) =8268482a(25) =8602840a(26) =20622042a(27) =20800402a(28) =22024420a(29) =22428600