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A135659 a(n) = 24*n + 7. 4
7, 31, 55, 79, 103, 127, 151, 175, 199, 223, 247, 271, 295, 319, 343, 367, 391, 415, 439, 463, 487, 511, 535, 559, 583, 607, 631, 655, 679, 703, 727, 751, 775, 799, 823, 847, 871, 895, 919, 943, 967, 991, 1015, 1039, 1063, 1087, 1111, 1135, 1159, 1183, 1207 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

Conjecture: All Mersenne Primes (A000668) > 3 are in this sequence.

LINKS

G. C. Greubel, Table of n, a(n) for n = 0..1000

Index entries for linear recurrences with constant coefficients, signature (2,-1).

FORMULA

From Colin Barker, Apr 02 2012: (Start)

a(n) = 2*a(n-1) - a(n-2).

G.f.: (7+17*x)/(1-x)^2. (End)

E.g.f.: (7 + 24*x)*exp(x). - G. C. Greubel, Oct 25 2016

MATHEMATICA

Table[24n + 7, {n, 0, 100}]

LinearRecurrence[{2, -1}, {7, 31}, 60] (* Harvey P. Dale, Jul 14 2013 *)

CROSSREFS

Cf. A107006, A124477, A135657, A135982.

Sequence in context: A000921 A185004 A172490 * A255414 A031388 A163354

Adjacent sequences:  A135656 A135657 A135658 * A135660 A135661 A135662

KEYWORD

nonn,easy

AUTHOR

Artur Jasinski, Nov 25 2007

EXTENSIONS

Offset changed to 0 by Omar E. Pol, Oct 25 2016

STATUS

approved

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Last modified June 22 12:24 EDT 2017. Contains 288613 sequences.