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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A080320 a(n) = A057118(A080295(n)) = A080300(A080318(n)). Positions of A080318 in A014486.

Original entry on oeis.org

1, 8, 625, 82461, 2414517826, 465696894874, 19586243923520645, 911881322544255111111, 2344958374133795816706574529598, 540549352213084909964319555106232
Offset: 0

Views

Author

Antti Karttunen, Mar 02 2003

Keywords

Crossrefs

Cf. A080321.

A080230 Engel expansion for (positive) constant defined in A078756.

Original entry on oeis.org

2, 4, 30, 63, 162, 629, 3918, 5345, 8577, 10902, 12073, 19001, 28961, 33387, 65964, 345951, 1876681, 2212505, 9373113, 11011867, 12921837, 14245984, 63809171, 96843656, 111393114, 340427213, 536556183, 768096412, 1510946116, 3988447796
Offset: 1

Views

Author

Jon Perry, Feb 08 2003

Keywords

Crossrefs

Programs

  • PARI
    { my(x=vector(31), a=vector(#x-1)); x[1]=0.62923321313860758778445822033246963679442280615921;
    for (i=1,#a,a[i]=ceil(1/x[i]); x[i+1]=x[i]*a[i]-1); a }

Formula

See A006784 for definition of Engel expansion.
Showing 1-2 of 2 results.