Centered 10-gonal numbers.

Terms

a(0) =1a(1) =11a(2) =31a(3) =61a(4) =101a(5) =151a(6) =211a(7) =281a(8) =361a(9) =451a(10) =551a(11) =661a(12) =781a(13) =911a(14) =1051a(15) =1201a(16) =1361a(17) =1531a(18) =1711a(19) =1901a(20) =2101a(21) =2311a(22) =2531a(23) =2761a(24) =3001a(25) =3251a(26) =3511a(27) =3781a(28) =4061a(29) =4351