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 1-2 of 2 results.

A107313 Odd squares written backwards and sorted.

Original entry on oeis.org

1, 9, 18, 52, 94, 121, 144, 148, 163, 169, 522, 526, 925, 927, 961, 982, 1042, 1062, 1089, 1251, 1273, 1297, 1405, 1426, 1656, 1674, 1828, 1843, 1861, 5202, 5203, 5209, 5221, 5224, 5227, 5265, 9022, 9049, 9082, 9235, 9295, 9423, 9468, 9481, 9631, 9657
Offset: 1

Views

Author

Zak Seidov, May 21 2005

Keywords

Comments

A074895 Primes written backwards and sorted

Crossrefs

Cf. A074895.

Programs

  • Mathematica
    Sort[Table[FromDigits[Reverse[IntegerDigits[n^2]]], {n, 1, 99, 2}]]

A356246 Primes whose reversal is a multiple of 14.

Original entry on oeis.org

41, 89, 211, 223, 281, 293, 463, 487, 499, 691, 827, 839, 2129, 2213, 2237, 2333, 2357, 2441, 2477, 2503, 2539, 2647, 2659, 2693, 2731, 2767, 2851, 2887, 2971, 4021, 4057, 4091, 4153, 4177, 4261, 4273, 4297, 4409, 4517, 4637, 4649, 4721, 4733, 4877, 4889, 4903, 4973
Offset: 1

Views

Author

Bernard Schott, Jul 30 2022

Keywords

Comments

Intersection of A087762 and A355430.

Examples

			281 is a term since 281 is prime and 182 = 14 * 13.
		

Crossrefs

Primes whose reversal is a multiple of k: A074895 (k=1), A355430 (k=2), {3} (k=3), A355983 (k=4), A045711 (k=5), A087762 (k=7), A355984 (k=8), {11} (k=11), A087764 (k=13), this sequence (k=14), A355985 (k=16), A087765 (k=17), A087766 (k=19), A087767 (k=23).

Programs

  • Mathematica
    Select[Prime[Range[666]], Divisible[IntegerReverse[#], 14] &] (* Amiram Eldar, Jul 30 2022 *)
Showing 1-2 of 2 results.