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.

A376046 Complement of A325114.

Original entry on oeis.org

7, 14, 17, 21, 27, 28, 35, 37, 42, 47, 49, 56, 57, 63, 67, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 84, 87, 91, 97, 98, 105, 107, 112, 114, 117, 119, 121, 126, 127, 128, 133, 135, 137, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 154, 156, 157, 161, 163, 167
Offset: 1

Views

Author

N. J. A. Sloane, Sep 09 2024

Keywords

Comments

Numbers missing from A325114.
Equivalently, numbers whose decimal expansion has a subsequence which is divisible by 7.
Similar to the "Buzz" sequence A092433, but with a more inclusive definition.
Contains 114.

Crossrefs

Programs

  • PARI
    is(n) = { my (d = digits(n)); for (i = 1, #d, if (d[i], for (j = i, #d, my (s = fromdigits(d[i..j])); if (s % 7==0, return (1););););); return (0); } \\ Rémy Sigrist, Nov 16 2024