A074134 First column of triangle A074135.

1, 2, 3, 6, 10, 15, 22, 29, 36, 45, 55, 66, 78, 91, 105, 120, 136, 153, 171, 190, 210, 231, 253, 276, 301, 326, 351, 378, 406, 435, 465, 496, 528, 561, 595, 630, 666, 703, 741, 780, 820, 861, 903, 946, 990, 1035, 1081, 1128, 1176, 1225, 1275, 1326, 1378, 1431

Offset

1,2

Links

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

Crossrefs

Cf. A074135.

Sequence in context: A102366 A152452 A217741 * A056178 A320597 A227566

Adjacent sequences: A074131 A074132 A074133 * A074135 A074136 A074137

Keyword

nonn,easy,less

Author

Amarnath Murthy, Aug 27 2002

Extensions

Edited and extended by David Wasserman, Oct 31 2006

Status

approved