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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A267348 Decimal equivalents of terms of A266926 interpreted as binary numbers.

Original entry on oeis.org

0, 1, 2, 6, 54, 3510, 14380470, 241264265751990, 67909853583655146508751957430, 5380372916045726369002105219892285499516304666683458153910, 33773148168338125039096320085837383261496919374684668572527108632210618661283323381212228218472784834977109705977270
Offset: 1

Views

Author

Giovanni Teofilatto, Jan 13 2016

Keywords

Comments

For n>1, a(n+1)/a(n) is an integer. Therefore, after 2, a(n) is divisible by 6.
The term a(12) has 925 decimal digits; a(13) has 1850 decimal digits. - Michael De Vlieger, Jan 13 2016

Crossrefs

Cf. A266926.

Programs

  • Mathematica
    a = {0, 1}; Do[AppendTo[a, FromDigits@ Flatten@ Map[IntegerDigits@ # &, If[n < 2, Reverse@ a, a]]], {n, 9}]; FromDigits[IntegerDigits@ #, 2] & /@ a (* Michael De Vlieger, Jan 13 2016 *)

Extensions

More terms from Michael De Vlieger, Jan 13 2016
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Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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