This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A264430 Triangle read by rows, Bell transform of second order Bell numbers (A187761). 2
 1, 0, 1, 0, 1, 1, 0, 2, 3, 1, 0, 6, 11, 6, 1, 0, 23, 50, 35, 10, 1, 0, 106, 268, 225, 85, 15, 1, 0, 568, 1645, 1603, 735, 175, 21, 1, 0, 3459, 11348, 12572, 6713, 1960, 322, 28, 1, 0, 23544, 86775, 107738, 65352, 22323, 4536, 546, 36, 1, 0, 176850, 727629 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 0,8 LINKS Peter Luschny, The Bell transform EXAMPLE Triangle starts: [1] [0,    1] [0,    1,     1] [0,    2,     3,     1] [0,    6,    11,     6,    1] [0,   23,    50,    35,   10,    1] [0,  106,   268,   225,   85,   15,   1] [0,  568,  1645,  1603,  735,  175,  21,  1] [0, 3459, 11348, 12572, 6713, 1960, 322, 28, 1] PROG (Sage) # The function bell_transform is defined in A264428. def A264430_triangle(dim):     uno = [1]*dim     bell_numbers = [sum(bell_transform(n, uno)) for n in range(dim)]     bell_number_2 = [sum(bell_transform(n, bell_numbers)) for n in range(dim)]     for n in range(dim): print bell_transform(n, bell_number_2) A264430_triangle(10) CROSSREFS Cf. A000110, A187761, A264428. Sequence in context: A264428 A256550 A005210 * A264433 A048994 A132393 Adjacent sequences:  A264427 A264428 A264429 * A264431 A264432 A264433 KEYWORD nonn,tabl AUTHOR Peter Luschny, Nov 13 2015 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 March 18 22:11 EDT 2019. Contains 321305 sequences. (Running on oeis4.)