5-tuples of practical numbers: numbers n such that n-6, n-2, n, n+2, n+6 are all practical numbers.

Terms

a(0) =18a(1) =30a(2) =198a(3) =306a(4) =462a(5) =1482a(6) =2550a(7) =4422a(8) =17298a(9) =23322a(10) =23550a(11) =40350a(12) =52578a(13) =67938a(14) =88506a(15) =92202a(16) =96222a(17) =123006a(18) =131070a(19) =219102a(20) =226182a(21) =237690a(22) =277506a(23) =312702a(24) =359658a(25) =432822a(26) =526878a(27) =533370a(28) =584166a(29) =659934