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 1-3 of 3 results.

A059574 The array described in A059513 read by antidiagonals in the 'up' direction.

Original entry on oeis.org

1, 1, 2, 6, 4, 1, 1, 13, 19, 23, 116, 107, 87, 48, 1, 1, 243, 458, 635, 708, 736, 5659, 5533, 5163, 4239, 2967, 1517, 1, 1, 11562, 22824, 33291, 41772, 47733, 50031, 50796, 521040, 515254, 497789, 452016, 385422, 301161, 204598, 103125, 1
Offset: 1

Views

Author

Floor van Lamoen, Jan 23 2001

Keywords

Crossrefs

Cf. A000667, A035002, A059216, A059219, A059575.

A059575 The array described in A059513 read by antidiagonals in the direction of construction.

Original entry on oeis.org

1, 1, 2, 1, 4, 6, 1, 13, 19, 23, 1, 48, 87, 107, 116, 1, 243, 458, 635, 708, 736, 1, 1517, 2967, 4239, 5163, 5533, 5659, 1, 11562, 22824, 33291, 41772, 47733, 50031, 50796, 1, 103125, 204598, 301161, 385422, 452016, 497789, 515254, 521040
Offset: 1

Views

Author

Floor van Lamoen, Jan 23 2001

Keywords

Crossrefs

Cf. A000667, A035002, A059216, A059219, A059574.

Extensions

Sequence contained two errors corrected by N. J. A. Sloane, Jun 14 2005

A059578 Variation of Boustrophedon transform applied to 1,1,1,1,... Fill an array by diagonals, all in the 'up' direction. The first column is 1,1,1,1,.... For the next element of a diagonal, add to the previous element the elements of the row and the column the new element is in. The first row gives a(n).

Original entry on oeis.org

1, 2, 7, 30, 147, 792, 4559, 27500, 171645, 1099388, 7185101, 47724494, 321225165, 2186177302, 15018795171, 104011496474, 725373340023, 5089785834004, 35907469451787, 254541483884544, 1812185157383017, 12951828431246472, 92893383046741073, 668383820775639066
Offset: 1

Views

Author

Floor van Lamoen, Jan 23 2001

Keywords

Examples

			The array begins
1 2 7 30 ...
1 4 20 ...
1 8 ...
1 ...

Crossrefs

Cf. A000667, A035002, A059216, A059219, A059502, A059513.

Extensions

More terms from Sean A. Irvine, Sep 29 2022
Showing 1-3 of 3 results.

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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