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A094281 The leftmost column of triangle A094280. 4
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 (list; graph; refs; listen; history; text; internal format)
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

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Last modified February 25 20:04 EST 2020. Contains 332258 sequences. (Running on oeis4.)