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A224829 Numbers m, such that there is no solution m = x + y + 3*z, with triangular numbers x, y, z. 3
8, 17, 26, 35, 44, 53, 62, 71, 77, 80, 89, 98, 107, 116, 125, 134, 143, 152, 158, 161, 170, 179, 188, 197, 206, 215, 224, 233, 239, 242, 251, 260, 269, 278, 287, 296, 305, 314, 320, 323, 332, 341, 350, 359, 368, 377, 386, 395, 401, 404, 413, 422, 431, 440 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

A224823(a(n)) = 0;

terms not of the form 9*k+8: 77,158,239,320,401,482,563,644,698,... .

LINKS

Reinhard Zumkeller, Table of n, a(n) for n = 1..1000

PROG

(Haskell)

a224829 n = a224829_list !! n

a224829_list = filter ((== 0) . a224823) [0..]

CROSSREFS

Cf. A017257 (subsequence), A000217.

Sequence in context: A305496 A043485 A031495 * A273188 A017257 A052222

Adjacent sequences:  A224826 A224827 A224828 * A224830 A224831 A224832

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Jul 21 2013

STATUS

approved

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Last modified May 25 01:39 EDT 2019. Contains 323534 sequences. (Running on oeis4.)