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A047714 Numbers n which are the sum of 3 but no fewer nonzero fourth powers. 4
3, 18, 33, 48, 83, 98, 113, 163, 178, 243, 258, 273, 288, 338, 353, 418, 513, 528, 593, 627, 642, 657, 707, 722, 768, 787, 882, 897, 962, 1137, 1251, 1266, 1298, 1313, 1328, 1331, 1378, 1393, 1458, 1506, 1553, 1568, 1633, 1808, 1875, 1922, 1937, 2002, 2177 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Robert Israel, Table of n, a(n) for n = 1..10000

FORMULA

A002377(a(n)) = 3. - Robert Israel, Jul 24 2020

MAPLE

N:= 3000: # for terms <= N

F1:= {seq(i^4, i=1..floor(N^(1/4)))}: n1:= nops(F1):

F2:= select(`<=`, {seq(seq(F1[i]+F1[j], i=1..j), j=1..nops(F1))}, N):

F3:= select(`<=`, {seq(seq(s+t, s=F1), t=F2)}, N):

A:= sort(convert(F3 minus (F2 union F1), list)); # Robert Israel, Jul 24 2020

CROSSREFS

Cf. A000583, A002377, A003337, A336536.

Sequence in context: A190308 A161443 A003337 * A204192 A108169 A063116

Adjacent sequences:  A047711 A047712 A047713 * A047715 A047716 A047717

KEYWORD

nonn

AUTHOR

Arlin Anderson (starship1(AT)gmail.com)

STATUS

approved

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Last modified October 21 11:51 EDT 2020. Contains 337914 sequences. (Running on oeis4.)