A003372 Numbers that are the sum of 5 positive 7th powers.

5, 132, 259, 386, 513, 640, 2191, 2318, 2445, 2572, 2699, 4377, 4504, 4631, 4758, 6563, 6690, 6817, 8749, 8876, 10935, 16388, 16515, 16642, 16769, 16896, 18574, 18701, 18828, 18955, 20760, 20887, 21014, 22946, 23073, 25132, 32771, 32898, 33025, 33152, 34957, 35084, 35211

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn
• easy

Examples

			From _David A. Corneth_, Aug 04 2020: (Start)
16898692 is in the sequence as 16898692 = 3^7 + 4^7 + 8^7 + 9^7 + 10^7.
34270142 is in the sequence as 34270142 = 1^7 + 1^7 + 9^7 + 10^7 + 11^7.
43759626 is in the sequence as 43759626 = 2^7 + 3^7 + 9^7 + 11^7 + 11^7. (End)
		

Links

• Chai Wah Wu, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A001015 (seventh powers).

Programs

PARI

list(lim)=my(v=List(), A, B, C, D); lim\=1; for(a=1, sqrtnint(lim-4, 7), A=a^7; for(b=1, min(sqrtnint(lim-A-3, 7), a), B=A+b^7; for(c=1, min(sqrtnint(lim-B-2, 7), b), C=B+c^7; for(d=1,min(sqrtnint(lim-C-1,7),c), D=C+d^7; for(e=1,min(sqrtnint(lim-D,7),d), listput(v,D+e^7)))))); Set(v) \\ Charles R Greathouse IV, Nov 05 2017