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 1-9 of 9 results.

A047121 Sum{T(i,n-i): i=0,1,...,n}, array T as in A047120.

Original entry on oeis.org

1, 2, 3, 5, 9, 18, 36, 69, 134, 263, 526, 1052, 2085, 4143, 8250, 16500, 33000, 65851, 131484, 262668, 525336, 1050672, 2100045, 4198157, 8393603, 16787206, 33574412, 67136750, 134255332, 268484858, 536969716, 1073939432, 2147761687
Offset: 0

Views

Author

Clark Kimberling

Keywords

A047122 T(n,n), array T as in A047120.

Original entry on oeis.org

1, 1, 3, 10, 36, 129, 471, 1744, 6531, 24643, 93541, 356808, 1366632, 5252532, 20247138, 78245742, 303053351, 1176042891, 4571690601, 17799156930, 69394115895, 270886964569, 1058633284203, 4141439892120, 16216887541767
Offset: 0

Views

Author

Clark Kimberling

Keywords

A047123 T(n,n-1), array T as in A047120.

Original entry on oeis.org

1, 1, 4, 16, 58, 215, 806, 3051, 11602, 44307, 169840, 653204, 2519314, 9740350, 37739300, 146498531, 569642584, 2218322463, 8650367796, 33773500347, 132008143328, 516495270723, 2022721237326, 7928249018667, 31100068617294
Offset: 1

Views

Author

Clark Kimberling

Keywords

A047124 T(n,n-2), array T as in A047120.

Original entry on oeis.org

1, 1, 6, 22, 86, 335, 1307, 5071, 19664, 76299, 296396, 1152682, 4487818, 17492162, 68252789, 266589233, 1042279572, 4078677195, 15974343417, 62614027433, 245608306154, 964087953123, 3786809126547, 14883181075527
Offset: 2

Views

Author

Clark Kimberling

Keywords

A047125 T(n,n-3), array T as in A047120.

Original entry on oeis.org

1, 2, 6, 28, 120, 501, 2020, 8062, 31992, 126556, 499478, 1968504, 7751812, 30513489, 120090702, 472636988, 1860354732, 7323975621, 28840527086, 113600162826, 447592682400, 1764087889221, 6954932056860, 27428450072466
Offset: 3

Views

Author

Clark Kimberling

Keywords

A047126 T(n,n+1), array T as in A047120.

Original entry on oeis.org

1, 2, 6, 20, 71, 256, 938, 3480, 13041, 49234, 186968, 713428, 2733218, 10506788, 40506442, 156554820, 606400307, 2353368138, 9148789134, 35620615548, 138878821241, 542138013480, 2118718654794, 8288638523100, 32456517032946
Offset: 0

Views

Author

Clark Kimberling

Keywords

A047127 T(n,n+2), array T as in A047120.

Original entry on oeis.org

1, 3, 10, 35, 127, 467, 1736, 6510, 24591, 93427, 356620, 1366586, 5254256, 20259304, 78309078, 303346956, 1177325247, 4577098533, 17821458618, 69484705346, 271251048911, 1060085370591, 4147198630980, 16239629491179
Offset: 0

Views

Author

Clark Kimberling

Keywords

A047128 T(n,n+3), array T as in A047120.

Original entry on oeis.org

1, 4, 15, 56, 211, 798, 3030, 11550, 44193, 169652, 653158, 2521038, 9752516, 37802636, 146792136, 570924940, 2223730395, 8672669484, 33864089798, 132372227670, 517947357111, 2028479976186, 7950990968079, 31189593428478
Offset: 0

Views

Author

Clark Kimberling

Keywords

A047129 T(2n,n), array T as in A047120.

Original entry on oeis.org

1, 1, 6, 28, 166, 971, 5937, 36736, 230363, 1458037, 9292357, 59576614, 383721187, 2481397399, 16099317872, 104753149406, 683279530195, 4466548322041, 29253296829696, 191917744224242, 1260998821726319, 8296736705457073
Offset: 0

Views

Author

Clark Kimberling. Definition revised Dec 08 2006

Keywords

Showing 1-9 of 9 results.

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

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