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A094277 First column of triangle A094275. 1
1, 2, 4, 7, 11, 15, 20, 26, 34, 42, 51, 61, 72, 84, 97, 111, 126, 142, 159, 177, 196, 216, 237, 259, 282, 306, 331, 357, 384, 412, 441, 471, 502, 534, 567, 601, 636, 672, 709, 747, 786, 826, 867, 909, 952, 996, 1042, 1088, 1135, 1183, 1232, 1282, 1333, 1385 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..54.

CROSSREFS

Cf. A094275.

Sequence in context: A025719 A025696 A077169 * A263995 A293239 A261878

Adjacent sequences:  A094274 A094275 A094276 * A094278 A094279 A094280

KEYWORD

nonn,easy,less

AUTHOR

Amarnath Murthy, Apr 27 2004

EXTENSIONS

Edited and extended by David Wasserman, Jul 26 2006

STATUS

approved

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Last modified September 20 22:20 EDT 2019. Contains 327252 sequences. (Running on oeis4.)