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 1-4 of 4 results.

A075356 Sum of terms in n-th group in A075352.

Original entry on oeis.org

1, 2, 7, 11, 24, 33, 58, 74, 115, 140, 201, 237, 273, 364, 413, 532, 596, 747, 828, 1015, 1115, 1342, 1463, 1734, 1878, 2022, 2353, 2522, 2905, 3101, 3540, 3765, 4264, 4520, 5083, 5372, 6003, 6327, 7030, 7391, 7752, 8550, 8950, 9828, 10269, 11231, 11715
Offset: 1

Views

Author

Amarnath Murthy, Sep 19 2002

Keywords

Crossrefs

Cf. A075352, A075353, A075354, A075355.

Formula

a(n) = A075355(n)*(A075354(n)+A075353(n))/2. - David Wasserman, Jan 16 2005

Extensions

More terms from David Wasserman, Jan 16 2005

A075353 Initial term of n-th group in A075352.

Original entry on oeis.org

1, 2, 3, 5, 7, 10, 13, 17, 21, 26, 31, 37, 43, 49, 56, 63, 71, 79, 88, 97, 107, 117, 128, 139, 151, 163, 175, 188, 201, 215, 229, 244, 259, 275, 291, 308, 325, 343, 361, 380, 399, 418, 438, 458, 479, 500, 522, 544, 567, 590, 614, 638, 663, 688, 714, 740, 767, 794
Offset: 1

Views

Author

Amarnath Murthy, Sep 19 2002

Keywords

Crossrefs

Cf. A075352, A075354, A075355, A075356.

Formula

a(n) = A075354(n-1)+1 = a(n-1)+A075355(n-1). - M. F. Hasler, Jul 19 2012

Extensions

More terms from David Wasserman, Jan 16 2005

A075354 Final term of n-th group in A075352.

Original entry on oeis.org

1, 2, 4, 6, 9, 12, 16, 20, 25, 30, 36, 42, 48, 55, 62, 70, 78, 87, 96, 106, 116, 127, 138, 150, 162, 174, 187, 200, 214, 228, 243, 258, 274, 290, 307, 324, 342, 360, 379, 398, 417, 437, 457, 478, 499, 521, 543, 566, 589, 613, 637, 662, 687, 713, 739, 766, 793
Offset: 1

Views

Author

Amarnath Murthy, Sep 19 2002

Keywords

Crossrefs

Cf. A075352, A075353, A075355, A075356.

Formula

a(n) = A075353(n+1)-1 = a(n-1)+A075355(n). - M. F. Hasler, Jul 19 2012

Extensions

More terms from David Wasserman, Jan 16 2005

A075355 Number of terms in n-th group in A075352.

Original entry on oeis.org

1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 12, 13, 13, 14, 14, 15, 15, 16, 16, 17, 17, 18, 18, 19, 19, 19, 20, 20, 21, 21, 22, 22, 23, 23, 24, 24, 25, 25, 26, 26, 27, 27, 27, 28, 28, 29, 29, 30, 30, 31, 31, 32, 32, 33, 33, 34, 34, 35, 35, 35, 36
Offset: 1

Views

Author

Amarnath Murthy, Sep 19 2002

Keywords

Comments

Differs from A008619 in the offset and from the 13th term a(13)=6 on: Integers that appear three times in a row are {6,12,19,27,35,...}. - M. F. Hasler, Jul 19 2012

Crossrefs

Cf. A075352, A075353, A075354, A075356.

Formula

a(n) = A075354(n)-A075353(n)+1. - David Wasserman, Jan 16 2005

Extensions

More terms from David Wasserman, Jan 16 2005
Showing 1-4 of 4 results.

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

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