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A120140 a(1)=13; a(n)=floor((26+sum(a(1) to a(n-1)))/2). 0
13, 19, 29, 43, 65, 97, 146, 219, 328, 492, 738, 1107, 1661, 2491, 3737, 5605, 8408, 12612, 18918, 28377, 42565, 63848, 95772, 143658, 215487, 323230, 484845, 727268, 1090902, 1636353, 2454529, 3681794, 5522691, 8284036, 12426054, 18639081 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..36.

CROSSREFS

Cf. A073941, A112088, A072493.

Sequence in context: A089391 A038954 A005106 * A101849 A141562 A108097

Adjacent sequences:  A120137 A120138 A120139 * A120141 A120142 A120143

KEYWORD

nonn

AUTHOR

Graeme McRae, Jun 10 2006

STATUS

approved

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Last modified September 28 21:22 EDT 2021. Contains 347717 sequences. (Running on oeis4.)