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!)
 A136534 A001263 * A128064 (unsigned). 1
 1, 2, 2, 4, 8, 3, 7, 24, 21, 4, 11, 60, 90, 44, 5, 16, 130, 300, 260, 80, 6, 22, 2252, 840, 1120, 630, 132, 7, 29, 448, 2058, 3920, 3430, 1344, 203, 8, 37, 744, 4536, 11760, 14700, 9072, 2604, 296, 9, 46, 1170, 9180, 31248, 52920, 46872, 21420, 4680, 414, 10 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Row sums = A001791: (1, 4, 15, 56, 210,...). Left Column = A000124: (1, 2, 4, 7, 11, 16, 22,...). LINKS FORMULA A001263 * A128064 (unsigned), A001263 = the Narayana triangle, A128064 = an infinite lower triangular matrix with (1, 2, 3,...) in the main and subdiagonals. EXAMPLE First few rows of the triangle are: 1; 2, 2; 4, 8, 3; 7, 24, 21, 4; 11, 60, 90, 44, 5; 16, 130, 300, 260, 80, 6; 22, 252, 840, 1120, 630, 132, 7; ... CROSSREFS Cf. A001263, A128064, A001791, A000124. Sequence in context: A112059 A093094 A045777 * A121175 A183397 A339490 Adjacent sequences:  A136531 A136532 A136533 * A136535 A136536 A136537 KEYWORD nonn,tabl AUTHOR Gary W. Adamson, Jan 04 2008 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 July 30 13:24 EDT 2021. Contains 346359 sequences. (Running on oeis4.)