A212462 a(n) = ceiling(5n*log(5n)).

9, 24, 41, 60, 81, 103, 125, 148, 172, 196, 221, 246, 272, 298, 324, 351, 378, 405, 433, 461, 489, 518, 546, 575, 604, 633, 663, 692, 722, 752, 782, 813, 843, 874, 904, 935, 966, 997, 1029, 1060, 1092, 1123, 1155

Offset: 1

Author

Mohammad K. Azarian, May 31 2012

Keywords

• easy
• nonn

Links

• Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Crossrefs

Cf. A050502, A050504, A212455, A212456, A212457, A212458, A212459, A212460, A212461.

Programs

Derive

PROG(y := [], x := 100, LOOP(IF(x = 0, RETURN y), y := ADJOIN(CEILING(5·x·LOG(5·x)), y), x := x - 1))

Magma

[Ceiling(5*n*Log(5*n)): n in [1..80]]; // Vincenzo Librandi, Feb 14 2013

Mathematica

Table[Ceiling[5*n*Log[5*n]], {n, 80}] (* Vincenzo Librandi, Feb 14 2013 *)

PARI

a(n) = ceil(5*n*log(5*n)); \\ Michel Marcus, Jan 11 2016

Formula

a(n) = A050502(5*n). - Michel Marcus, Jan 11 2016