The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A157634 Triangle read by rows: T(n,m)= 1 in the first column and on the diagonal, otherwise 5*n*m*(n-m)*(n^2-n*m+m^2). 0
 1, 1, 1, 1, 30, 1, 1, 210, 210, 1, 1, 780, 960, 780, 1, 1, 2100, 2850, 2850, 2100, 1, 1, 4650, 6720, 7290, 6720, 4650, 1, 1, 9030, 13650, 15540, 15540, 13650, 9030, 1, 1, 15960, 24960, 29400, 30720, 29400, 24960, 15960, 1, 1, 26280, 42210, 51030, 54900 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 0,5 COMMENTS Row sums are 2+n^2*(n^2-1)*(4*n^2-1)/6 for n>=1:   1, 2, 32, 422, 2522, 9902, 30032, 76442, 171362, 348842, 658352,... LINKS EXAMPLE 1; 1, 1; 1, 30, 1; 1, 210, 210, 1; 1, 780, 960, 780, 1; 1, 2100, 2850, 2850, 2100, 1; 1, 4650, 6720, 7290, 6720, 4650, 1; 1, 9030, 13650, 15540, 15540, 13650, 9030, 1; 1, 15960, 24960, 29400, 30720, 29400, 24960, 15960, 1; 1, 26280, 42210, 51030, 54900, 54900, 51030, 42210, 26280, 1; 1, 40950, 67200, 82950, 91200, 93750, 91200, 82950, 67200, 40950, 1; MATHEMATICA t[n_, m_] = If[n*m*(n - m) == 0, 1, n^5 - (m^5 + (n - m)^5)]; Table[Table[t[n, m], {m, 0, n}], {n, 0, 10}]; CROSSREFS Sequence in context: A040902 A040901 A040900 * A040913 A040914 A040912 Adjacent sequences:  A157631 A157632 A157633 * A157635 A157636 A157637 KEYWORD nonn,tabl,easy AUTHOR Roger L. Bagula, Mar 03 2009 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified January 25 22:56 EST 2020. Contains 331270 sequences. (Running on oeis4.)