A236312 a(n) = floor((n + e)^2), where e is the natural logarithm base.

7, 13, 22, 32, 45, 59, 76, 94, 114, 137, 161, 188, 216, 247, 279, 313, 350, 388, 429, 471, 516, 562, 610, 661, 713, 768, 824, 883, 943, 1006, 1070, 1136, 1205, 1275, 1348, 1422, 1499, 1577, 1657, 1740, 1824, 1911, 1999, 2090, 2182, 2277, 2373, 2471, 2572, 2674, 2779

Offset

0,1

Links

Table of n, a(n) for n=0..50.

Example

a(0) = 7 because e^2 = 7.389056...
a(1) = 13 because (e + 1)^2 = 13.82561975584874...
a(2) = 22 because (e + 2)^2 = 22.2621834127668...

Mathematica

Table[Floor[(n + E)^2], {n, 0, 49}] (* Alonso del Arte, Jan 23 2014 *)

Prog

(Python)
import math
for n in range(99): print(str(int((n+math.e)**2)), end=", ")
(PARI) list(maxx)={n=0; ptr=0; while(n<maxx, q=floor((n+exp(1))^2);
ptr++; print(ptr, "  ", q); n++); } \\ Bill McEachen, Feb 02 2014

Crossrefs

Cf. A001113, A235361.

Sequence in context: A335277 A034102 A034112 * A301691 A163676 A273605

Adjacent sequences: A236309 A236310 A236311 * A236313 A236314 A236315

Keyword

nonn

Author

Alex Ratushnyak, Jan 21 2014

Status

approved