Number of edges in an equal-armed cross with arms of length n (see Comments in A331456 for definition).

A333036

Number of edges in an equal-armed cross with arms of length n (see Comments in A331456 for definition).

Terms

    a(0) =8a(1) =172a(2) =964a(3) =3316a(4) =8524a(5) =18188a(6) =34540a(7) =59908a(8) =97324a(9) =150028a(10) =221692a(11) =316124a(12) =438364a(13) =592364a(14) =784060a(15) =1019468a(16) =1304996a(17) =1644900a(18) =2047412a(19) =2519172a(20) =3068556a(21) =3704004a(22) =4434044a(23) =5265868a(24) =6211652a(25) =7276492a(26) =8474484a(27) =9813996a(28) =11304292a(29) =12958380

External references