A094281 The leftmost column of triangle A094280.

1, 2, 4, 7, 10, 14, 19, 26, 33, 41, 51, 61, 72, 84, 97, 112, 127, 143, 160, 178, 197, 217, 239, 261, 284, 308, 333, 359, 386, 414, 443, 473, 504, 537, 570, 604, 639, 675, 712, 750, 789, 829, 870, 912, 955, 999, 1044, 1090, 1137, 1186, 1235, 1285, 1336, 1388

Offset

1,2

Links

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

Formula

a(n) = A094280(1+A000217(n-1)).

Crossrefs

Cf. A094280, A094282, A094283, A094284.

Sequence in context: A196126 A024536 A177237 * A076101 A288243 A170890

Adjacent sequences: A094278 A094279 A094280 * A094282 A094283 A094284

Keyword

nonn

Author

Amarnath Murthy, Apr 27 2004

Extensions

Edited and extended by Antti Karttunen, Aug 25 2006

Status

approved