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.

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A256247 a(n) = sqrt(2*A256246(n) + prime(A256246(n))).

Original entry on oeis.org

2, 5, 7, 23, 33, 51, 65, 97, 99, 111, 115, 133, 137, 141, 143, 161, 171, 175, 177, 199, 207, 237, 241, 253, 271, 273, 275, 287, 309, 313, 315, 337, 387, 417, 423, 429, 435, 481, 507, 513, 541, 543, 557, 561, 589, 591, 613, 625, 631, 639, 651, 661, 677, 679, 727, 745, 769, 773, 777, 789
Offset: 1

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Author

Zak Seidov, Mar 20 2015

Keywords

Comments

Except for the first term, 2, all terms are odd.

Examples

			a(1) = 2 = sqrt(2*A256246(1) + prime(A256246(1))) = sqrt(2*1 + prime(1)) = sqrt(2*1+2) = sqrt(4),
a(2) = 5 = sqrt(2*6 + prime(6)) = sqrt(2*6+13) = sqrt(25).
		

Crossrefs

Cf. A000040 (primes), A256246.
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