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A157613 22*(121*n+1). 3
2684, 5346, 8008, 10670, 13332, 15994, 18656, 21318, 23980, 26642, 29304, 31966, 34628, 37290, 39952, 42614, 45276, 47938, 50600, 53262, 55924, 58586, 61248, 63910, 66572, 69234, 71896, 74558, 77220, 79882, 82544, 85206, 87868, 90530 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

Pell type equation: A157614(n)^2-A181679(n)*a(n)^2 = 1.

LINKS

Vincenzo Librandi, X^2-AY^2=1

Wolfram MathWorld, Pell Equation

EXAMPLE

a(1) = 22*121*1+22 = 2684; a(2) = 22*121*2+22 = 5346; a(3) = 22*121*3+22 = 8008.

PROG

(MAGMA) a157613:=func< n | 22*(121*n+1) >; [ a157613(n): n in [1..40] ];

CROSSREFS

Cf. A157614 (29282*n^2+484*n+1), A181679 (121*n^2+2*n).

Sequence in context: A123075 A112138 A166513 * A186833 A186937 A185748

Adjacent sequences:  A157610 A157611 A157612 * A157614 A157615 A157616

KEYWORD

nonn

AUTHOR

Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Mar 03 2009

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Last modified February 16 04:18 EST 2012. Contains 205860 sequences.