Pentagonal numbers that are also Niven numbers.

Terms

a(0) =1a(1) =5a(2) =12a(3) =70a(4) =117a(5) =210a(6) =247a(7) =330a(8) =715a(9) =782a(10) =1080a(11) =1520a(12) =1926a(13) =2625a(14) =2752a(15) =3015a(16) =3290a(17) =3432a(18) =4510a(19) =5370a(20) =5922a(21) =6902a(22) =7740a(23) =8400a(24) =9560a(25) =11310a(26) =12105a(27) =13776a(28) =14652a(29) =15862