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A278862 Numbers that are not the sum of 2 or fewer terms from A057890. 1
157441, 177617, 178637, 226891, 374359, 900745, 1456223, 1526983, 1545227, 1817999, 2232815, 2274595, 2320643, 2336935, 2363383, 2404487, 2461559, 2536595, 2812451, 2877463, 2893769, 2910811, 2912446, 3046915, 3053999, 3090575, 3105319, 3382141 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Not known to be infinite.  This list is complete up to 3,500,000.

LINKS

Robert Israel, Table of n, a(n) for n = 1..262

Aayush Rajasekaran, Jeffrey Shallit, and Tim Smith, Sums of Palindromes: an Approach via Nested-Word Automata, preprint arXiv:1706.10206 [cs.FL], June 30 2017.

MAPLE

# with A a list of terms < 2^d of A057890

B:= Array(0..2^d-1, datatype=integer[4]):

for a in A do B[a]:= 1 od:

C:= SignalProcessing:-Convolution(B, B):

select(t -> C[t+1] < 0.5, [$0..2^d-1]); # Robert Israel, Dec 08 2016

CROSSREFS

Cf. A057890.

Sequence in context: A274364 A258073 A245681 * A250595 A253311 A253659

Adjacent sequences:  A278859 A278860 A278861 * A278863 A278864 A278865

KEYWORD

nonn

AUTHOR

Jeffrey Shallit, Dec 07 2016

STATUS

approved

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Last modified August 1 17:43 EDT 2021. Contains 346402 sequences. (Running on oeis4.)