Numbers n such that the decimal representation of n is contained as substring in that of the n-th pentagonal number.
A179782
Numbers n such that the decimal representation of n is contained as substring in that of the n-th pentagonal number.
Terms
- a(0) =0a(1) =1a(2) =5a(3) =7a(4) =25a(5) =67a(6) =482a(7) =551a(8) =625a(9) =667a(10) =2937a(11) =6667a(12) =9284a(13) =9376a(14) =9649a(15) =48179a(16) =49900a(17) =55712a(18) =66667a(19) =89517a(20) =90625a(21) =161579a(22) =631206a(23) =666667a(24) =890625a(25) =1348613a(26) =2089517a(27) =3863187a(28) =4999000a(29) =6666667
External references
- oeis: A179782