cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

Showing 1-3 of 3 results.

A247258 The first of four consecutive primes that add up to a fourth power.

Original entry on oeis.org

5171, 16402481, 467943389, 504990743, 749554829, 857435471, 2430292727, 4486052477, 6659865623, 7064402441, 7487094743, 13947137557, 21257639959, 30293402473, 79101562439, 155450409929, 169935221737, 440301256697, 1010752751017, 1086948034597
Offset: 1

Views

Author

Zak Seidov, Nov 30 2014

Keywords

Examples

			5171 is in the sequence because the next three primes are 5179, 5189, 5197, and 5171 + 5179 + 5189 + 5197 = 20736 = 12^4.
		

Crossrefs

Cf. A245577 (base of 4th power), A247259, A247265, A247266 (members of quadruple), subsequence of A206280.

A247259 Second smallest of four consecutive primes that add up to a 4th power.

Original entry on oeis.org

5179, 16402489, 467943401, 504990767, 749554891, 857435473, 2430292801, 4486052479, 6659865647, 7064402473, 7487094779, 13947137563, 21257639981, 30293402479, 79101562453, 155450409973, 169935221837, 440301256699, 1010752751027, 1086948034603
Offset: 1

Views

Author

Zak Seidov, Nov 30 2014

Keywords

Crossrefs

Formula

a(n) = nextprime(A247258(n)) = A151800(A247258(n)).

A247266 a(n) = s, last of four consecutive primes p,q,r,s with p+q+r+s = A245577(n)^4.

Original entry on oeis.org

5197, 16402517, 467943467, 504990823, 749554913, 857435633, 2430292847, 4486052491, 6659865703, 7064402549, 7487094821, 13947137657, 21257640067, 30293402527, 79101562571, 155450410033, 169935221879, 440301256711, 1010752751093, 1086948034657, 1265625000037
Offset: 1

Views

Author

Zak Seidov, Nov 30 2014

Keywords

Crossrefs

Showing 1-3 of 3 results.