

A147677


Subtract 5, add 8, repeat.


1



7, 2, 10, 5, 13, 8, 16, 11, 19, 14, 22, 17, 25, 20, 28, 23, 31, 26, 34, 29, 37, 32, 40, 35, 43, 38, 46, 41, 49, 44, 52, 47, 55, 50, 58, 53, 61, 56, 64, 59, 67, 62, 70, 65, 73, 68, 76, 71, 79, 74, 82, 77, 85, 80, 88, 83, 91, 86, 94, 89, 97, 92, 100, 95, 103, 98, 106, 101, 109
(list;
graph;
refs;
listen;
history;
text;
internal format)



OFFSET

1,1


COMMENTS

A147675A147678 are from a quiz that someone asked me to help them with.


LINKS

Table of n, a(n) for n=1..69.
Index entries for linear recurrences with constant coefficients, signature (1, 1, 1).


FORMULA

From Zak Seidov, Apr 22 2009: (Start)
a(n) = a(n2) + 3.
a(n) = (1/4)*(6*n + 9  13*(1)^n).
(End)
From R. J. Mathar, Apr 22 2009: (Start)
a(n) = a(n1) + a(n2)  a(n3) = 3*n/2 + 9/4 + 13*(1)^(n+1)/4.
G.f.: x*(75*x+x^2)/((1+x)*(x1)^2). (End)


MATHEMATICA

LinearRecurrence[{1, 1, 1}, {7, 2, 10}, 80] (* Harvey P. Dale, Jan 16 2015 *)


CROSSREFS

Sequence in context: A021141 A246948 A248283 * A090243 A216150 A145338
Adjacent sequences: A147674 A147675 A147676 * A147678 A147679 A147680


KEYWORD

nonn


AUTHOR

N. J. A. Sloane, Apr 21 2009


EXTENSIONS

More terms from Zak Seidov and R. J. Mathar, Apr 22 2009


STATUS

approved



